Costeas-Geitonas School vs International School of Athens
Costeas-Geitonas School and International School of Athens are both in Athens, about 9 km apart. Both schools follow an IB curriculum. Published annual fees are close, at €8,400 - 13,600 for Costeas-Geitonas School and €8,700 - 15,000 for International School of Athens. Both take pupils from 3 to 18.
CGS is located in Pallini, Attikis, 15351, Greece. The Pallini area is part of the Attica region near Athens. The campus is accessible by local roads and is served by CGS's transportation services.
Location
42 Artemidos Street and Xenias Street, Kifissia, 145 62, Greece. The campus is located in Kifissia within the Athens metropolitan area. Bus service is provided in most parts of the greater Athens area, with central pickup points along routes.
Stages
Stages
Pre-School & Kindergarten / IB PYP; Primary School / IB PYP; Middle School / IB MYP; High School; IB Diploma Programme
Stages
Kindergarten; Primary Years Programme (PYP); Middle Years Programme (MYP); High School; IB Diploma Programme (DP).
School type
School type
The school is one of Greece's oldest and most prestigious private schools.
School type
PRIVATE
Pupil nationality mix
Pupil nationality mix
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Pupil nationality mix
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Additional learning support
Additional learning support
CGS provides inclusive education with a School Counseling Department (SCD) and a Learning Support Team (LST) to support students with learning, social and emotional needs, medical conditions, or mobility challenges. The SCD offers counseling and a range of support services; accommodations include differentiated instruction, extended time, and individualized support plans as needed.
Additional learning support
The Learning Center provides psychological counseling and learning support for PreK–12, including psycho-educational counseling, referrals to specialists, and individualized educational plans for students with learning differences.
Country affiliation
Country affiliation
Greece
Country affiliation
Greece
Religious affiliation
Religious affiliation
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Religious affiliation
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School day structure
School day structure
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School day structure
School day runs from 8:30 to 16:00, Monday to Friday.
Bus service details
Bus service details
CGS offers a bus service with defined transport zones (Zone A–Zone E) and corresponding costs for the 2025–2026 academic year.
Bus service details
Bus service is provided in most parts of the greater Athens area; pick-up points are central along routes, with door-to-door service for primary students when possible. All school buses are owned by the school and drivers and bus monitors are school employees.
How instalments and deposit are handled - Standard instalment schedule: first payment 40% of the total, second payment 30%, third payment 30%. - A registration deposit is required at enrolment and is deducted from the first instalment: EUR 1,600 per student for most year groups; EUR 2,000 per student for IB Diploma Programme entrants. The deposit is payable upon completion of registration. - Families may choose to pay annually; a 3% discount applies for full annual prepayment when made by the stated prepayment date.
Billing schedule and payment terms (dates used for scheduling and invoicing) - Invoicing periods and standard due dates: 1st instalment due mid‑September, 2nd instalment mid‑December, 3rd instalment mid‑March. Invoices are issued before the provision of the service and are produced up to the 10th working day of each month. - Specific instalment dates used in the published schedule: 15 September (1st instalment, 40%), 15 December (2nd instalment, 30%), 15 March (3rd instalment, 30%). The deposit is credited against the first instalment.
Transport (school bus) fees - Annual transport fees by zone (charged in September): Zone A EUR 1,400; Zone B EUR 1,600; Zone C EUR 1,800; Zone D EUR 1,900; Zone E EUR 2,100. A 50% discount is available for single‑direction use where space permits. Transport fees are billed annually.
Food service / catering fees - Food service fees (annual): 1 day/week EUR 275; 2 days/week EUR 545; 3 days/week EUR 815; 4 days/week EUR 1,075; 5 days/week EUR 1,250. For younger grades where meals are included, this is reflected in the tuition. Food service cancellations require one month's notice.
Other compulsory or recurring charges - Inspired Metaverse fee: EUR 50 annually (charged in October) for the listed grade groups. - IB examination charge (applies to IB Diploma exam year): EUR 750 annually (charged in November) where applicable. - Afternoon zone (SMART) activities, extracurricular activities, school trips, external events, academic contest fees, university‑application support and other optional services are charged separately when used; these are billed per period or per event as applicable.
Uniforms, books and materials - School uniform and consumable educational materials are not included in the published tuition figures and are charged separately.
Sibling discounts and other discounts - Sibling discounts (non‑combinable and applied to the younger child): second child receives 8% off tuition of the compulsory programme; third child receives 40% off tuition of the compulsory programme and 50% off transport; fourth child receives 100% (tuition and transport). - The 3% prepayment discount for full annual payment is available when the full amount is settled by the stated prepayment deadline.
Refunds and cancellation terms - Application fee and the one‑off new‑student registration fee are non‑refundable. - Deposit refund on cancellation of registration before the start of the academic year: 100% refund if cancellation occurs by the specified early deadline; 50% refund if cancelled by the subsequent deadline; no refund of the deposit after the final deadline. Advance notice periods and exact calendar cutoff dates are used to determine eligibility for refund. - For termination of schooling or termination of transport service during the year, one term's prior written notice is required. For termination of catering, one month's prior written notice is required. Refunds or credits are handled in line with billing and invoicing procedures.
Payment methods accepted - Payments may be made by bank transfer or by debit/credit card. Invoices are issued prior to service provision and adjustments are made via credit notes where applicable.
Notes on additional charges and timing - Certain optional programmes and activity fees are announced before the start of the school year and charged when the activity takes place; SMART (afternoon zone) enrolment is term‑based and requires commitment for the full term. Changes in SMART enrolment in the first term are generally permitted up to the specified change deadline without charge.
(End of fee overview)
Fee details
Application / Registration fees
- Registration fee (one-off) for KG – Grade 12: EUR 1,700. - Registration fee (one-off) for Junior Pre‑KG & Pre‑KG: EUR 600.
Tuition fees by year group (amounts per installment and annual total)
Payment is split into four installments labeled: In advance, Sept. 04, Nov. 06, Jan. 15. The installment amounts and totals below are stated in euros.
- IB examination fees (Grade 12 only): EUR 1,200. - e‑Assessment fee (Grade 10 only): EUR 400. - Achievement testing: EUR 400. - Learning Centre fees: Learning Centre 1 EUR 1,700; Learning Centre 2 EUR 2,700. - School transportation (bus) fees for KG – Grade 12 range by route from EUR 2,100 to EUR 2,800 (specific route charges listed below). Junior Pre‑KG / Pre‑KG bus fee: EUR 2,100. - Route 1 (Kifissia, N. Erythrea, Kastri, Ekali): EUR 2,100. - Route 2 (Marousi, Filothei, Psychiko, N. Iraklio, Chalandri, Melissia): EUR 2,300. - Route 3 (Dionysos, Anoixi, Ag. Stefanos, Pendeli, Thrakomakedones): EUR 2,400. - Route 4 (Kolonaki, Cholargos, Papagou, Ag. Paraskevi, Vyronas, Peristeri): EUR 2,600. - Route 5 (Kallithea, N. Smyrni, Faliro): EUR 2,800. - Route 6 (Glyfada, Vari, Vouliagmeni, Voula): EUR 2,800.
Discounts and prepayment
- Sibling discounts: 5% for the second child; 7% for the third child; 10% for the fourth child or more. - Alumni discount: 5%. - Prepayment discount: 2% for payments made by July 31 (applies to prepayment conditions described by the school).
Billing schedule and payment terms
- Tuition is billed in four installments with the following payment points: In advance, Sept. 04, Nov. 06, Jan. 15. Installment amounts are those listed under each year group above. - Accepted payment methods: credit card (VISA, MasterCard, AMEX, UnionPay) and bank remittance / direct deposit to the school's beneficiary account. Bank details provided for remittance include Alpha Bank (SWIFT/BIC CRBAGRAA, IBAN GR60 014 0342 0342 0023 2000 2338) and Eurobank (SWIFT/BIC ERBKGRAA, IBAN GR52 026 0284 0000 0302 0026 2143).
Boarding fees
- Boarding is not offered; the school operates as a day school. No boarding fees apply.
Uniform and other routine costs
- The school uniform must be purchased from the designated supplier LB Creations; school uniform items and PE kit are required. (Uniform pricing is set by the supplier.) - Additional routine costs that may apply during the year include personal supplies, optional trips, extracurricular activities, and any specific course materials or examination fees (for example, IB exam fees listed above).
Refund information (applicable items and conditions)
- IB-related registration and subject fee rules: registration and late subject fees are generally non‑refundable once incurred after the first registration deadline; subject and core fees may be refunded to the school if a candidate withdraws between the first and second registration deadlines. Specific conditions and deadlines apply to refunds for IB subject/core fees and retake registrations.
Summary of key payment options
- Credit card: VISA, MasterCard, AMEX, UnionPay. - Bank transfer / remittance: Alpha Bank (IBAN GR60 014 0342 0342 0023 2000 2338, SWIFT CRBAGRAA); Eurobank (IBAN GR52 026 0284 0000 0302 0026 2143, SWIFT ERBKGRAA).
Diving deeper
Diving deeper
Boarding arrangements
Boarding arrangements
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Boarding arrangements
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Uniform requirement
Uniform requirement
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Uniform requirement
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Food options
Food options
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Food options
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House system
House system
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House system
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Governance and ownership
Governance and ownership
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Governance and ownership
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Academics
Academics
Curriculum details
Curriculum details
CGS offers the International Baccalaureate (IB) programmes: Primary Years Programme (PYP), Middle Years Programme (MYP), and Diploma Programme (DP). In the PYP, Greek is the primary language of instruction with English as the secondary language of instruction. CGS provides all three IB programmes for students aged 3–18.
Curriculum details
ISA provides an English-speaking, international environment from Kindergarten through High School. The Primary School follows the Primary Years Programme (PYP), the Middle School follows the Middle Years Programme (MYP), and the High School offers the International Baccalaureate Diploma Programme (IB DP) or the ISA High School Diploma. ISA is an IB World School and is accredited by the Middle States Association of Colleges and Schools (MSA-CESS). The ISA High School Diploma is recognized by the Greek Ministry of Education as equivalent to the Greek apolytirio. English is the language of instruction, with English as an Additional Language (EAL) support where needed. The DP is offered alongside the College Preparatory Programme (CP) for students who pursue CP.
Student teacher ratio
Student teacher ratio
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Student teacher ratio
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Exam results
Exam results
Class of 2025 IB Diploma Programme results: 100% awarded the IB Diploma; average overall score 36.1 out of 45; two students achieved 45/45; 17% scored 40+; 72% scored 35+; 83% were admitted to their first-choice university; 40% were admitted to a Top 150 university.
Exam results
The University Placement Office reports a strong higher education performance. Approximately 95% of ISA graduates are accepted to higher education institutions worldwide. Notable destinations include Imperial College London, King's College London, UCL, McGill University, Berkeley, Stanford University, the University of Edinburgh and Erasmus University. These outcomes reflect the school's preparation for university study.
Higher education progression
Higher education progression
Graduates gain admission to universities worldwide. For the Class of 2025, 83% were admitted to their first-choice university and 40% to a Top 150 university. University placements include Ludwig Maximilian University of Munich (LMU), KU Leuven, University of Amsterdam, Trinity College Dublin, and Bocconi University, among others.
Higher education progression
Graduates pursue higher education at universities around the world. The University Placement Office provides guidance on applications, transcripts and personal statements. Notable destinations include Imperial College London, King's College London, UCL, McGill University, Berkeley, Stanford, the University of Edinburgh and Erasmus University. These outcomes reflect the school's focus on preparing students for international higher education.
Gifted and talented
Gifted and talented
CGS Academia provides enrichment for highly motivated students with high academic performance. The programme offers subjects such as Astrophysics, Visual Arts, Creative Writing, Philosophy, Programming, and Public Speaking. Eligibility includes a GPA of the previous year equal to or greater than 18 and 7/14, with at least four nominations by the subject groups in the grade.
Gifted and talented
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Academic calendar
Academic calendar
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Academic calendar
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Wellbeing & support
Wellbeing & support
Social & emotional learning
Social & emotional learning
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Social & emotional learning
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Special educational needs (SEN)
Special educational needs (SEN)
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Special educational needs (SEN)
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English as an additional language
English as an additional language
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English as an additional language
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Mental wellbeing
Mental wellbeing
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Mental wellbeing
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Safeguarding
Safeguarding
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Safeguarding
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Safeguarding policy
Safeguarding policy
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Safeguarding policy
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Facilities
Facilities
Facilities overview
Facilities overview
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Facilities overview
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Sports facilities
Sports facilities
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Sports facilities
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Academic facilities
Academic facilities
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Academic facilities
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Extra curricular facilities
Extra curricular facilities
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Extra curricular facilities
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Parent experience
Parent experience
History
History
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History
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Community
Community
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Community
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Parent teacher association
Parent teacher association
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Parent teacher association
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Extra-curricular
Extra-curricular
Academic & intellectual
Academic & intellectual
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Academic & intellectual
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Arts & creative
Arts & creative
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Arts & creative
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Cultural & language
Cultural & language
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Cultural & language
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Social & hobbies
Social & hobbies
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Social & hobbies
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Community & service
Community & service
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Community & service
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Leadership & professional
Leadership & professional
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Leadership & professional
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Lifestyle & wellbeing
Lifestyle & wellbeing
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Lifestyle & wellbeing
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Language provision
Language provision
Language provision
Language provision
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Language provision
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Bilingual teaching
Bilingual teaching
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Bilingual teaching
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Immersion programs
Immersion programs
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Immersion programs
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Reputation
Reputation
Awards
Awards
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Awards
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Accreditations
Accreditations
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Accreditations
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Admissions
Admissions
Admissions
Admissions
IB Mission Statement: The International Baccalaureate aims to develop inquiring, knowledgeable and caring young people who help to create a better and more peaceful world through intercultural understanding and respect. To this end the organization works with schools, governments and international organizations to develop challenging programmes of international education and rigorous assessment. School Mission Statement: At CGS we strive to provide an academic setting where every student's skills and character can flourish to the fullest by encouraging meaningful connections between classroom and real life experiences. Our students work in an environment of ongoing inquiry, cooperation and mutual respect as they acquire a high caliber education and positive life attitudes to make a contribution to the world they live in. Philosophy: Our aspiration is to enroll children and parents who match our educational philosophy, learning culture, ethos and values. The school is committed to the principle of equal opportunity in education, and therefore accepts students without discrimination of gender, colour, race, religion or nationality. CGS is a multi-level and multi-faceted school offering the following programmes: Pre-K4 (ages 4 – 5) – IB Primary Years Programme; Kindergarten (ages 5 – 6) – IB Primary Years Programme; Primary School – IB Primary Years Programme (ages 6 – 12); Middle School- 1st grade of High School – IB Middle Years Programme (ages 12-16); High School – 2nd-3rd grade of Lyceum (ages 16-18); International Baccalaureate Diploma Programme (ages 16 – 18). Admission criteria: Applications for admission are received throughout the school year. An offer of admission is made based on availability, are in accordance with the school's policies and Greek Ministry of Education regulations. Admission criteria are based on age, academic skills, attitude to learning, and candidate's personal profile, taking into consideration the overall dynamics of our existing classes. Based on the year level and language proficiency, testing and screening for placement purposes will take different forms, including, but not limited to, consideration of academic performance records, a personal interview, school readiness testing, literacy and numeracy proficiency testing and a review of previous special needs documentation and health records. Within this framework, admission is based on: interview with the candidate; candidate's performance in diagnostic assessment tasks, designed according to age and grade requirements; candidate's previous academic records, where applicable; a pedagogical report completed by the candidate's current teacher(s)/school, where applicable; a signed declaration by at least one of the parents/guardians of the candidate, which is GDPR compliant and would inform the school of all known or diagnosed special educational needs, is required. Accordingly, professional evaluations, along with details of extra educational, emotional and/or social support the candidate is receiving, should also be provided at the time of application. Failure to provide the required documentation in due time may result in the cancellation of admission. Admission decisions: All applications are reviewed by the Admissions Committee, which consists of the head of the level for which the candidate is applying, programme coordinators, Head of Admissions office and representatives from CGS School Counseling Department (SCD). Special consideration is given to eligible applicants who are siblings of currently enrolled students and to CGS staff and CGS alumni families. However, an offer is not guaranteed, as it is subject to standard Admissions procedure. CGS reserves the right to decide against proceeding with the enrollment of a candidate in consideration of learning support resources' availability and in accordance with the school's Policies. In case significant social / emotional / behavioral issues or learning differences arise during the enrollment process at the school, there will be close consultation with parents, and it is possible that accommodations, to allow the student to enroll at CGS may be required. Consequently, additional costs for this service may be incurred. This review may also involve requiring parents to seek external evaluation by an external body. In case the Admissions Committee determines that CGS is unable to support a student's needs, or if parents are unwilling to proceed with the student's evaluation, CGS reserves the right to terminate the enrollment procedure. Once the application is complete, including receipt of school records and confidential recommendations (previous academic records, pedagogical reports, etc.), offers are formally made either via telephone or e-mail within two weeks. Confirmation of offer & enrollment: Offers for admission are to be accepted or rejected by candidate families within one week of receipt by contacting the Admissions office. Once the offer has been accepted, parents will be sent an acceptance letter as well as a Registration Approval Form (RAF). In order to confirm enrollment and reserve a place for the admitted applicant, completion of the RAF and payment of the registration fee (in accordance with the school's fees) are due within 10 days of receipt of the acceptance letter. These commitments must be made on a timely basis so that we guarantee that places are held for admitted applicants who indeed wish to enroll, or we may allocate places to other candidates in the wait pool. Partial refunds are made within specific deadlines in accordance with the school's fee policy. Class Placement: It is our policy to make initial tentative placements of students in classes for the coming year, according to a set of clear and fairly managed criteria, which include: Academic range and balance; Balance between new and returning students; Behaviour issues; Friendships / optimal peer relationships; Gender (in order to maintain a balance in the class); Size of the class; Special needs requirements within the class; Teacher's professional judgement / experience / detailed knowledge of child, considering academic and personal abilities and needs. These recommendations are given very careful consideration by the teachers and will remain tentative until after the arrival and assessment of new students is completed at the commencement of the next year. Reserved places: Special consideration is given to eligible applicants who are siblings of currently enrolled students and the offspring of CGS alumni. Nevertheless, admission is not automatic, and it is dependent on the number of applicants and the number of spaces available in each particular grade, as well as the qualifications of each applicant. Wait pool: When the number of eligible applicants exceeds the availability of spaces for a particular grade, students may be placed in a wait pool until a place becomes available. Effort is made to keep parents of applicants in the wait pool updated regarding enrollment status and to confirm whether they wish to remain in the wait pool. For further information on the enrollment procedure please follow the link: Enrollment Procedure. Review process of CGS whole-school admissions policy: The CGS whole-school Admissions policy has been reviewed following discussions among Programme Coordinators, Principals, Head of School Counseling Department, Head of Admissions office and the Head of school. The review process was completed in June 2022. Tuition fee: Tuition Fees | Academic Year 2025 - 2026. Pre-K4/IB PYP (4-5 years) 8,400 €; Kindergarten/IB PYP (5-6 years) 8,400 €; Primary School / IB PYP (Grade 1-6) 8,500 € per grade; Junior High School / IB MYP (Grade 7-9) 8,980 € per grade; Senior High School (Grade 10-12) 8,980–9,200 € per grade; IB Diploma Programme (Year 1) 13,600 €, (Year 2) 13,300 €; Transportation (2025-2026) listed by zone; Food Service options and weekly rates are provided. Transportation details include Zone A, B, C, D, and E with corresponding costs. Attachments include CGS Admissions Policy 2022-23 and related materials. Transportation, food service and other fees are also enumerated.
Admissions
The school offers the IB Diploma Program. The ISA Scholarship Program awards two IB scholarships for the 2025-2026 school year. To apply for the scholarships, applicants submit the Scholarship Application Form and supporting documents: two Letters of Recommendation from Grade 10 teachers; School Transcripts for Grades 7-9; the final grades for the first term of Grade 10; language certificates if applicable; copies of other records of achievement; and a passport/ID document. Shortlisting for the scholarship considers the applicant's dossier (grades, Letters of Recommendation, transcripts and other records). On the day of the examination, candidates must present identity documents. The scholarship assessment is through written examinations in English and Mathematics. The English examination tests language ability; the Mathematics examination tests the Grade 7-9 material and 3/4 of the Grade 10 syllabus. The examinations are held at ISA's Artemidos 42 & Xenias Street, Kifissia 14562. Exam dates include English (29 March 2025) and Mathematics (29 March 2025). The syllabus examined includes material from Grades 7-9 and the current Grade 10 curriculum. Shortlisted candidates are notified whether they advance to the examination stage.
Scholarships
Scholarships
Financial Aid and Scholarship Fund: CGS is offering academic scholarships for the academic year 2026-27. The scholarships are awarded to students who will be attending A' Gymnasium / MYP2, A' Lyceum / MYP5 and the IB Diploma Programme for the academic year 2026-2027. A maximum of 5 Full Scholarships for A' Gymnasium / MYP2; A maximum of 2 Full Scholarships for A' Lyceum / MYP5; 1 Full and a maximum of 3 Partial Scholarships for the IB Diploma Programme. The granting of a Full Scholarship requires an average score of 80% or higher and success in the personal interview (the student profile is consistent with the International Baccalaureate definition for students attending its programmes). The granting of a Partial Scholarship (30%-80%) requires an average score of 60% or higher (the top 10 candidates with the highest score of over 60%) and success in the personal interview (the student profile is consistent with the International Baccalaureate definition for students attending its programmes). Date of Scholarship Exams (Written component): Sunday 7th March 2026. Deadline for submission of application: Tuesday 3rd March 2026. Arrival Time: 8:30-9:00 a.m. Start Time: 9:30 a.m. Duration of Written Exams: 3 hours (1 hour per subject). Candidates will be assessed in the following courses: A' Gymnasium / MYP2: Mathematics (1 hour), Modern Greek Language (1 hour), English (1 hour). IB Diploma Programme (Subjects Duration): English (Part A: Reading Comprehension; Part B: Composition) 1 hour; Mathematics (Part A: 8-10 MCQs; Part B: 4-5 analytical exercises) 1 hour; Critical thinking test (5 MC exercises in English) 30 minutes. Candidates are not tested on specific material; the applicant's previous study should suffice. To participate, applicants must complete the Academic Scholarship Application Form and submit it with the required documents to the Financial Aid and Scholarship Fund by 1pm Tuesday 3 March 2026. Scholarship Application Form for CGS Students; Scholarship Application Form for non-CGS students. For more information: scholarship@cgs.edu.gr. Attachments include sample exam papers for various subjects and levels.
Scholarships
The school awards two IB Diploma Program scholarships for the 2025-2026 academic year. Applicants must complete the Scholarship Application Form and submit at least two Letters of Recommendation from Grade 10 teachers, School Transcripts for Grades 7-9, the first-term Grade 10 transcript, language certificates if applicable, copies of other records of achievement, and a passport/ID document. Shortlisting is based on the applicant's dossier. The two scholarships are awarded through written examinations in English and Mathematics; candidates must bring official ID to the exam. The English exam assesses language ability; the Mathematics exam covers the Grades 7-9 material and part of the Grade 10 syllabus. Examinations take place at Artemidos 42 & Xenias Street, Kifissia 14562. For reference, the English and Mathematics exams were scheduled on Saturday, 29 March 2025.
Waitlist
Waitlist
When the number of eligible applicants exceeds the availability of spaces for a particular grade, students may be placed in a wait pool until a place becomes available. Effort is made to keep parents of applicants in the wait pool updated regarding enrollment status and to confirm whether they wish to remain in the wait pool.
