International School of Athens vs St. Catherine's British School
International School of Athens and St. Catherine's British School are both in Athens, about 3 km apart. Both schools offer IB programmes, and St. Catherine's British School also offers EYFS. Published annual fees are €8,700 - 15,000 at International School of Athens and €9,710 - 16,500 at St. Catherine's British School, which puts St. Catherine's British School roughly 11% higher. Both take pupils from 3 to 18.
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.
Location
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Stages
Stages
Kindergarten; Primary Years Programme (PYP); Middle Years Programme (MYP); High School; IB Diploma Programme (DP).
Stages
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School type
School type
PRIVATE
School type
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Pupil nationality mix
Pupil nationality mix
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Pupil nationality mix
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Additional learning support
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.
Additional learning support
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Country affiliation
Country affiliation
Greece
Country affiliation
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Religious affiliation
Religious affiliation
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Religious affiliation
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School day structure
School day structure
School day runs from 8:30 to 16:00, Monday to Friday.
School day structure
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Bus service details
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.
Bus service details
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Fees
Fees
Fee details
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).
Fee details
Fees (2025/26 academic year)
Application fee - A non-refundable application fee of €150 is payable when the application is submitted.
Registration fee and Development Fund (one‑off at acceptance) - Registration fee: €1,000 per child, payable by the date specified on the offer letter; this fee is non-refundable and is not a deposit against future tuition. - Development Fund (one‑off contribution paid at the same time as Registration): - Nursery to Year 10: €1,500 per child. - Year 11 to Year 13: €500 per child.
Reservation deposit - A non-refundable reservation deposit of €2,000 is due annually to reserve a child's place for the following academic year; it is allocated against the invoice billed in September once the current balance has been settled in full.
Annual tuition fees and per‑invoice amounts (school invoices twice yearly: September and January) - Nursery: Annual €9,710 — per invoice €4,855. - Reception & Year 1: Annual €13,300 — per invoice €6,650. - Year 2: Annual €13,970 — per invoice €6,985. - Years 3–6: Annual €14,120 — per invoice €7,060. - Years 7–9: Annual €14,660 — per invoice €7,330. - Years 10–11: Annual €15,830 — per invoice €7,915. - Years 12–13: Annual €16,500 — per invoice €8,250.
Discounts and mid‑year entry rules - Sibling tuition discounts: 2.5% for the second child, 7% for the third child, 10% for the fourth child. - Alumni discount: 5% for eligible families. - Prepayment discount: 2% discount if the applicable payment is received by the published prepayment date (example: 25 August 2025 for the 2025/26 schedule). - Mid‑year entry: second term entry charged at 65% of the annual fee; third term entry charged at 35% of the annual fee. Any family joining mid first term must pay the full amount due.
Bus (transport) fees - Annual bus fees by area (examples listed): - Area 1 (Kifissia, Kefalari): €2,089. - Area 2 (Ekali, Marousi, Filothei, Psychico, Kastri, Nea Erithrea, Politia): €2,576. - Area 3 (Dionyssos, Anoixi): €2,806. - Area 4 (Syntagma, Kolonaki): €2,806. - Area 5 (Holargos, Halandri, Papagou, Melissia, Aghia Paraskevi, Vrilissia): €2,806. - Area 6 (southern suburbs from Glyfada): €2,806. - Bus fees are reduced to 70% if only morning or only afternoon/late bus is used. - Bus sibling discounts: 2nd child 12%; 3rd and 4th child 50%.
Additional charges and items not included in tuition - Tuition does not include: daily transportation costs (unless separately charged), uniform costs, medical examination charges, externally marked examination fees, entry fees, costs of special or compulsory trips, extra‑curricular clubs, and other child‑specific charges. Parents are responsible for textbooks for Years 10–13. Examination charges for externally marked exams are payable by parents.
Billing schedule and payment terms - Fees are invoiced twice per year (September and January). Fees must be paid within 10 working days of receipt of the invoice. Late payment charges of €60 per month apply to outstanding balances. The school may initiate legal action if tuition payments are more than 30 days overdue; readmission after legal action requires payment of all outstanding fees plus the full first invoice for the coming school year.
Cancellation and refund rules - All tuition fees are non‑refundable. No refund is available for children leaving the school mid‑term. - Cancellation fee if a child is unable to commence: Nursery to Year 10 — €1,500; Year 11 to Year 13 — €500. The Registration Fee remains valid for two academic years (24 months) if re‑application is made within that period.
Fee payment options - Accepted payment methods: cheque in euros (payable to “St. Catherine's British School”), credit cards (Visa and MasterCard), bank transfer or direct deposit to the school's bank accounts. Cash payments are not accepted. Parents are asked to advise the Financial Administrator when making bank transfers.
Other practical notes on fees - Reservation deposits are only considered payable once the current balance has been settled in full; the reservation deposit is allocated against the September invoice. Late arrivals and mid‑term joiners are charged reduced fees based on the term entry point rules above.
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
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.
Curriculum details
Offers the International Baccalaureate Diploma Programme (IB DP) with English as the language of instruction. A broad range of DP subjects is offered, including Mathematics (Analysis and Approaches) and Mathematics (Applications and Interpretation), Business Management, Biology, Chemistry, Physics, Economics, Geography, History, Psychology, Computer Science, Visual Arts, Theatre, and Music. Language subjects include English A: Language and Literature, English A: Literature, French Ab Initio, French B, Spanish Ab Initio, Spanish B, Mandarin Ab Initio, Mandarin B, German Ab Initio, German B, Chinese B, Chinese A: Language and Literature, Modern Greek A: Language and Literature. Other DP courses include Environmental Systems and Societies, Digital Society, and Sports, Exercise and Health Science; Theory of Knowledge is part of the programme.
Student teacher ratio
Student teacher ratio
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Student teacher ratio
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Exam results
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.
Exam results
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Higher education progression
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.
Higher education progression
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Gifted and talented
Gifted and talented
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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
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.
Admissions
An application fee of €150 is payable at submission. On official offer, a Registration Fee of €1,000 and a Development Fund payment are due (Development Fund €1,500 for Nursery–Year 10; €500 for Years 11–13). The Development Fund is a one-off contribution payable with the Registration Fee by the date on the offer letter and is non-refundable. The Registration Fee, if paid, remains valid for two academic years (24 months) if enrolment is pursued after cancellation. A Cancellation Fee is charged according to the child's year group. Tuition fees are invoiced twice per year (September and January). Mid-year entry points: second term entry 65% of annual fees; third term entry 35%. All tuition fees are non-refundable. Fees must be paid within 10 working days of the invoice; late payments incur €60 per month. Payment can be made by cheque (euros), credit cards (Visa, MasterCard), bank transfer or direct deposit. Additional charges apply for examinations (externally marked), textbooks for Year 10–13, daily transportation, uniforms, medical examinations, entry fees, special outings or compulsory trips, and extracurricular clubs. Applications require €150 at submission; once offered, the Registration Fee and Development Fund become payable.
Scholarships
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.
