Gokkusagi Schools Istanbul vs Keystone International Schools
Gokkusagi Schools Istanbul and Keystone International Schools are both in Istanbul. Both schools offer IB programmes. Gokkusagi Schools Istanbul also offers Cambridge (Primary), Cambridge IGCSE and Cambridge A Levels, and Keystone International Schools also offers Canadian. Published annual fees are TRY 21,000 - 52,500 at Gokkusagi Schools Istanbul and TRY 22,750 - 26,750 at Keystone International Schools, which puts Gokkusagi Schools Istanbul roughly 48% higher. Both take pupils from 3 to 18. Gokkusagi Schools Istanbul is the larger school, with around 2,000 pupils to Keystone International Schools's 250. Both keep typical class sizes around 18.
Istanbul, Turkey. Gökkusagi Schools in Istanbul operate across four campuses: Atasehir, Bahcelievler, Bahcesehir, and Beylikduzu. The Atasehir Campus is in the Ataşehir district and has educated students from kindergarten to 12th grade since the 2021-2022 academic year, with international programs delivered entirely in English. The Bahcelievler Campus is in the Bahçelievler district and serves kindergarten through 12th grade with Cambridge Education and IB Primary Years and Diploma Programmes. The Bahcesehir Campus is in Bahçeşehir district, offering education for all levels from kindergarten to 12th with Cambridge and IB programs and 100% English instruction. The Beylikduzu Campus is in Beylikduzu district, delivering kindergarten through 12th grade with 100% English instruction.
Location
Keystone International Schools operates in Istanbul, Turkey, with two campuses: Küçük Çamlıca Campus (Gülhan Sok. 1-2, Üsküdar, 34660) and Çekmeköy Campus (Süleymaniye Cd. No:20B, Çekmeköy, 34782). It also features a Toronto Campus as part of its Canadian program. The Istanbul addresses are the primary Turkish locations for Keystone.
Stages
Stages
Kindergarten; Primary School; Middle School; High School
Application / registration fees - Registration (enrollment) fee: typically charged as a percentage of the annual tuition; published guidance shows a registration fee equal to 5%–10% of the annual tuition.
Tuition fees by year group (Istanbul campuses — published ranges) - Kindergarten (ana sınıfı): 20,000 TL – 100,000 TL per year. - Primary school (ilkokul): 30,000 TL – 50,000 TL per year. - Middle school (ortaokul): 40,000 TL – 60,000 TL per year. - High school (lise): 50,000 TL – 80,000 TL per year.
Tuition fees — per term / per grade detail - The school's public pages provide campus-level guidance and broad ranges for Istanbul campuses but do not publish a single, campus-specific per-grade, per-term fee table for Istanbul that is publicly accessible. Parents are asked to request campus-specific fee schedules via the school's information request form. - For a published example of a campus-specific fee table (Ankara campus, 2025–2026), the school lists annual tuition and separate charges for meals, books/stationery and uniform by grade (figures shown here exactly as published for that campus): - Kindergarten: 500.000 TL; Meals 104.860 TL; Books/Stationery 65.000 TL; Uniform 20.000 TL. - Grade 1: 650.000 TL; Meals 104.860 TL; Books/Stationery 65.000 TL; Uniform 20.000 TL. - Grade 2: 600.000 TL; Meals 104.860 TL; Books/Stationery 65.000 TL; Uniform 20.000 TL. - Grade 3: 600.000 TL; Meals 104.860 TL; Books/Stationery 65.000 TL; Uniform 20.000 TL. - Grade 4: 312.541 TL; Meals 104.860 TL; Books/Stationery 65.000 TL; Uniform 20.000 TL. - Grade 5: 650.000 TL; Meals 104.860 TL; Books/Stationery 65.000 TL; Uniform 20.000 TL. - Grade 6: 600.000 TL; Meals 104.860 TL; Books/Stationery 65.000 TL; Uniform 20.000 TL. - Grade 7: 600.000 TL; Meals 104.860 TL; Books/Stationery 65.000 TL; Uniform 20.000 TL. - Grade 8: 336.612 TL; Meals 104.860 TL; Books/Stationery 65.000 TL; Uniform 20.000 TL. - Grade 9: 700.000 TL; Meals 104.860 TL; Books/Stationery 65.000 TL; Uniform 20.000 TL. - Grade 10: 650.000 TL; Meals 104.860 TL; Books/Stationery 65.000 TL; Uniform 20.000 TL. - Grade 11: 650.000 TL; Meals 104.860 TL; Books/Stationery 65.000 TL; Uniform 20.000 TL. - Grade 12: 380.653 TL; Meals 104.860 TL; Books/Stationery 65.000 TL; Uniform 20.000 TL.
Billing schedule and payment terms - The school's published information directs parents to request detailed, campus-specific pricing and payment schedules via the information request form rather than publishing a standard public billing schedule; no single, public Istanbul billing calendar (per-term dates or standard installment plan) is posted. - The public pages reference typical discount types such as early (peşin) payment discounts, sibling discounts and academic-bursary discounts, indicating these discount types are used when applicable.
Boarding (residential) fees - No boarding or student residence (yurt) option or boarding fees are listed for the Istanbul campuses in the publicly available campus materials; campus pages and the pricing overview focus on day-school services (tuition, meals, transport/service).
Other costs and typical additional fees - Meals / cafeteria: published examples and guidance show a separate meal charge; reported meal costs vary (Ankara campus: 104.860 TL per year in the published table; published guidance for kindergartens cites monthly meal ranges of 500 TL–1,500 TL as a general reference). - Books and stationery: shown as a separate annual charge in campus-specific tables (Ankara example: 65.000 TL by grade). - Uniforms: listed as a separate charge in campus-specific tables (Ankara example: 20.000 TL); the school describes uniforms as a standard required item. - Transport / school bus service (servis): described as a chargeable service in campus information; specific Istanbul campus bus fees are not published publicly and are provided on request. - Extracurricular activities, special programmes, external exam fees (Cambridge/IB), school trips and some workshops may generate additional, separate charges; such items are referenced as chargeable extras but detailed fee lines are campus- and activity-specific.
Refunds and cancellation - A public, campus-specific refund or fee-cancellation schedule for Istanbul campuses is not posted in the public fee materials; no explicit, detailed refund table or standard refund percentages/dates was located in the published campus fee materials.
Fee payment options (methods) - The publicly available information does not list standard, campus-wide payment methods (credit card, bank transfer, etc.) on a single public page; parents are directed to request the campus fee schedule and associated payment terms via the information request process.
Practical summary (what these items mean for a parent) - For Istanbul campuses the site publishes tuition ranges by level (kindergarten, primary, middle, high) and describes standard additional charges (meals, books, uniform, transport, extracurriculars). - The school's pricing page instructs parents to request campus- and grade-specific fee schedules and payment terms using the school's information request form; a published, campus-specific Istanbul per-grade, per-term fee table for 2026/27 was not publicly available at the time of review.
If you need campus-specific numbers - Campus contact details and campus emails/phone numbers are published for each Istanbul campus (Ataşehir, Bahçelievler, Bahçeşehir, Beylikdüzü). Use the campus contact channel to obtain the precise, campus- and grade-level fee table and the school's official billing schedule and accepted payment methods.
Fee details
Application & registration fees - Canadian registration (mandatory, non-refundable): USD 1,750 per student per year. This fee is separate from tuition and is required for registration with the Prince Edward Island (PEI) Ministry of Education.
Tuition fees (annual, by year group) - Kindergarten (ages 3–5): USD 21,000 per year. - Primary (Grades 1–6): USD 24,000 per year. - Middle School (Grades 7–9): USD 25,000 per year. - High School (Grades 10–12): USD 25,000 per year.
Per-term (per-semester) amounts - The school operates on a two-semester academic calendar; present per-term figures below are the annual tuition divided by two (per semester). - Kindergarten: USD 10,500 per semester. - Primary (Grades 1–6): USD 12,000 per semester. - Middle School (Grades 7–9): USD 12,500 per semester. - High School (Grades 10–12): USD 12,500 per semester.
Billing schedule and payment terms - Deposit at registration: 40% of the chosen tuition is due at registration. - Remaining balance: The remaining tuition balance may be paid in installments; the installment cycle begins at registration and must be completed by December of the academic year in question. The annual Canadian registration fee (USD 1,750) must be paid in full at registration. - Sibling discount: 10% for the second sibling; 5% for each additional sibling. - Early-payment discounts and specific installment deadlines are published with the fee schedule and may include reduced rates for full payment by designated dates.
Boarding / residence - Keystone International Schools is a day school; no boarding fees apply. The school operates as a coeducational day school.
Other mandatory or likely additional costs - Canadian registration (listed above) is charged separately and is non-refundable. - Books and learning materials: - Grades 1–6: students must purchase books sourced from Canada. - Grades 7 and above: a book-rental program is offered; rental textbooks are provided rather than individual book purchases. - Lunch and catering: - Lunch is included in the tuition for all students except high school; high school students may bring lunch, purchase from the school, or buy cafeteria food. The school operates an in-house fresh meals program. - Uniforms: Uniforms are required (regular days Monday–Thursday; Fridays are casual within the dress code) and PE uniform is required on PE days. Families must purchase required uniform items. (Uniform policy and expectations are set in school documentation.) - Transportation: Licensed school bus service is provided; a separate transport fee typically applies for bus users (transport procedures and safety are described by the school). - Assessments/exams: Standardized testing and examination fees such as MAP testing are included in quoted tuition. - Field trips and extracurricular activities: participation-related charges (trip fees, materials, external examination fees where relevant) may be billed in addition to tuition as needed; such items are handled on a per-event basis and according to school policy.
Refund and withdrawal rules - Withdrawal prior to the start of the academic year: annual tuition is refunded less a 10% deduction from the annual tuition fee. - Withdrawal after the academic year begins: tuition and meal fees are prorated based on days attended; an additional 10% deduction from the annual tuition fee is applied when withdrawing after the academic year has started. Refunds follow the school's financial policy and the formal withdrawal procedure.
Fee payment options and invoicing notes - The school's published materials reference installment billing (40% at registration with the balance on an installment schedule through December) and indicate that early-payment discounts have applied in prior schedules; common payment channels for schools of this type typically include bank transfer/wire and direct payment methods. Specific accepted payment methods (credit card, bank-transfer details, local payment rules and any merchant fees) and exact installment dates are provided by the school with the invoice and fee schedule.
Summary of immediate charges at registration (typical) - First tuition installment (40% of the chosen annual tuition). - Canadian registration fee: USD 1,750 (non-refundable). - Any selected optional services billed upfront (for example, bus service or uniforms if the school invoices them at registration).
All figures quoted above are stated in USD. For any specific student-level invoice items (transport route cost, uniform package price, book purchase total, or confirmed installment dates) the school provides itemised billing at registration and with the official fee schedule.
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
The school offers Cambridge International School Program; IB Primary Years Program; IB Diploma Program; CAP Innovative Program; and Dual Foreign Language Education. The Education Model is the 'Living School' that aims to educate internationally conscious individuals who research, inquire, think, communicate, are informed, principled, open-minded, caring, risk takers, balanced, and reflective.
Curriculum details
PEI Canadian Diploma program at Keystone International Schools follows the Prince Edward Island system. It offers a Canadian high school diploma, with instruction in English and learning in French as an additional language. Grade 1 to 12 students are registered with the PEI Ministry of Education and have access to a PEI online library. The curriculum emphasizes critical thinking, communication, and real-world application, combining academic and applied courses, project-based learning, and standardized assessments such as the MAP Growth tests and DELF for French. English is the primary language of instruction, accompanied by an Intensive English Program for students needing extra support, and French is taught through a CEFR-aligned streaming program with additional intensive options. The program integrates language, music, arts, science, and physical education, with opportunities for exhibitions and field experiences.
Student teacher ratio
Student teacher ratio
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Student teacher ratio
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Exam results
Exam results
IB Diploma score: 44
Exam results
MAP Growth assessments are used to monitor progress in Science, Mathematics, and Language. DELF is used to assess French language proficiency. The PEI system supports the pathway to earning a Canadian high school diploma.
Higher education progression
Higher education progression
Graduates have been accepted to universities worldwide, including Istanbul Technical University, Yeditepe University, Istanbul Gelisim University, University of Manchester, University of Sussex, Birmingham University, John Moores University, University of Sheffield, University of London, University of Sydney, Western University, University of Alberta, KU Leuven University, Politecnico di Torino, Pavia University, Lasalle University Barcelona, Campbellsville University, University of Georgia, and Wroclaw University. Cambridge Program and IB Diploma Program support higher education progression.
Higher education progression
Graduates have acceptances to universities around the world, including the University of Toronto, University of Amsterdam, Koç University, IE University, and King's College London, among others.
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
1. Foundation Year entry: Turkish min 400 LGS score; English level below B1; English instruction is provided. Scholarships: 50% for 400-450 LGS score; 100% for 451-500 score (listed as TEOG in the policy). No failed subjects; GPA of 4 on a 5.0 scale. The admission decision is made by the DP coordinator. An international quota exists for students with accommodation bursaries. 2. Grade 9 (pre-IB): Turkish min 400 LGS score; English level at least B1; English instruction is provided. Scholarships: 50%–100% (range). No failed subjects; GPA of 4 on a 5.0 scale. Final admission decision rests with the DP coordinator. An international quota exists for accommodation bursaries. 3. Grade 10 (pre-IB): No failed Turkish subjects; GPA of 4.0 on a 5.0 scale in Grade 9; English level at B1+ or above; English instruction is provided. Scholarships: 0%–100% (range). End-of-Grade 10 tests or IGCSE/GCSE results may be used in the process; DP coordinator makes the final decision. An international quota exists for accommodation bursaries. 4. Grade 11 (IB Diploma Programme): No failed Turkish subjects; GPA of 4.0 on a 5.0 scale in Grades 9–10; English level B2 or above; English instruction is provided. Scholarships: 0%–100% (range). End-of-Grade 10 tests or IGCSE/GCSE results may be used; DP coordinator makes the final decision. An international quota exists for accommodation bursaries. 5. Grade 12 (IB Diploma Programme) – DP transfer: Turkish or International DP transfer students only; Final decision by the DP coordinator. An international quota exists for accommodation bursaries.
Admissions
1. Learn About Our School. Visit us in person during regular school hours to experience our classrooms and student life firsthand. If you are abroad, a Zoom meeting can be arranged to answer your questions. Before your visit, think about what matters most to you in a school environment and prepare questions about our programs. A school tour can be requested using the form below.
2. Apply. Complete our Registration Form if you decide to proceed. Applications may be submitted in person or online. If you wish to expedite, you may skip the tour and directly register online. Our admissions team will review your application and confirm the next steps.
3. Exams and Interviews. After we receive your application, we will schedule exams and interviews based on your child's grade level. These assessments help us evaluate your child's academic readiness and fit with our school culture. The results guide the admissions decision and inform the next steps in the process.
4. Admissions Decision. You will be informed of the admission decision within 5 days of completing the assessment process. The decision is communicated to families, and next steps for enrollment will be provided. This timeline helps families plan for the next steps in the admissions process.
Scholarships
Scholarships
Scholarships are available as bursaries tied to admission category. Foundation Year scholarships: 50% for 400–450 LGS score; 100% for 451–500 LGS score (maximum 500 points). Rates may change if the national exam scoring system changes; if the exam is repealed, the school will determine rates via its own written and oral exams. For students switching to IB from the Anatolian High School, 100% scholarship is possible if average grades are between 4.50 and 5.00, subject to the final decision of the DP coordinator. The school works with international foundations to provide scholarships and accommodation for international students to form international IB classes. There is an international quota for accepting students with accommodation bursaries. The school reserves the right to change admission criteria and bursary rates to ensure diversity.