Montgomery International School vs The International School of Brussels

	M Montgomery International School Brussels, Belgium	T The International School of Brussels Brussels, Belgium
Snapshot	Snapshot
Fees / year	Fees / year €27,650 - 35,400	Fees / year €22,590 - 49,715
Age range	Age range 5 - 18 years	Age range 2 - 18 years
Type	Type Co-educational	Type Co-educational
Curriculum	Curriculum IB (PYP), IB (MYP), IB (DP)	Curriculum IB (PYP), IB (MYP), IB (DP), Advanced Placement (AP), American Curriculum, BTEC Qualification
Pupils	Pupils 200	Pupils —
Typical class size	Typical class size 15	Typical class size —
Instruction language	Instruction language English, French	Instruction language English
Opened	Opened 2007	Opened 1951
Bus service	Bus service No	Bus service Yes
Essentials	Essentials
Location	Location Montgomery International School is located in the heart of Brussels, Belgium, at 133 Rue du Duc, 1200 Brussels. It sits near the European institutions and NATO, with convenient access to public transport. The campus supports an international atmosphere suitable for a cosmopolitan student body.	Location Kattenberg 19, B-1170 Brussels, Belgium. It is in Watermael-Boitsfort, the south‑east quadrant of Brussels. The 40‑acre campus sits within the Forêt de Soignes and offers extensive outdoor learning facilities; it is easily reachable by car, bus, train and tram.
Stages	Stages Elementary through secondary (PYP, MYP, and DP) for ages 5–19.	Stages Early Childhood Centre (Preschool – Grade 2); Elementary School (Grade 3–6); Middle School (Grade 7–9); High School (Grade 10–12).
School type	School type Private international IB World School	School type Private not-for-profit international day school.
Pupil nationality mix	Pupil nationality mix —	Pupil nationality mix 60+ nationalities represented.
Additional learning support	Additional learning support —	Additional learning support Inclusion & Challenge services provide personalised support for diverse learning needs across all age groups.
Country affiliation	Country affiliation Belgium	Country affiliation Belgium
Religious affiliation	Religious affiliation —	Religious affiliation —
School day structure	School day structure Primary hours: 8:10 am–3:30 pm, Wednesdays 8:10 am–12:05 pm; Secondary hours: 8:10 am–3:30 pm daily.	School day structure —
Bus service details	Bus service details No MIS-operated bus service. Families may use external providers (Infinities or Kid's Ride); MIS is not responsible for their operations.	Bus service details The ISB Bus Service operates with more than 30 buses serving most parts of the city and surrounding areas. It is available to students from Kindergarten to Grade 12, with BatOnRoute real‑time tracking and bus monitors. Late Bus Service is available for Middle and High School students; bus fees for 2025‑26: Return 3,140 Euro; One way 2,385 Euro.
Fees	Fees
Fee details	Fee details Application & registration fees - One‑time registration fee for new students: EUR 2,000. - Annual administration fee for returning students: EUR 1,650. - Waiting‑list payment: EUR 2,000 (this amount may be taken to secure a place on the waiting list and is refundable if the family chooses not to enrol after being offered a seat under the conditions described by the school). Tuition fees for the 2026/2027 academic year (annual and per‑term by year group) Note: tuition is published as an annual amount for 2026–2027; the school calendar is organised around three main teaching blocks across the academic year, so the per‑term figures below show the annual amount divided by three teaching terms (annual ÷ 3). The per‑term figures are presented to two decimal places. - PYP1–PYP5 (Grade 1–5): Annual tuition EUR 26,000 — Per term (annual ÷ 3) EUR 8,666.67. - MYP1–MYP3 (Grade 6–8): Annual tuition EUR 27,850 — Per term (annual ÷ 3) EUR 9,283.33. - MYP4–MYP5 (Grade 9–10): Annual tuition EUR 28,950 — Per term (annual ÷ 3) EUR 9,650.00. - DP1 (Grade 11): Annual tuition EUR 33,100 — Per term (annual ÷ 3) EUR 11,033.33. - DP2 (Grade 12): Annual tuition EUR 33,750 — Per term (annual ÷ 3) EUR 11,250.00. Discounts - 10% discount for the second child. - 20% discount for the third child. - 50% discount for the fourth child. What the annual tuition includes - Textbooks, online books and photocopies of the syllabus; PYP 3–5 school trip; day field trips; school hoodie and school t‑shirt (PYP and MYP only); yearbook; MYP & DP subscriptions to online resources; DP 1–2 exam fees. Additional costs (examples and typical amounts) - MYP yearly school trip (5 days/4 nights): approximate budget EUR 1,300 to EUR 1,600 (all MYP students are required to participate). - DP school trip: additional cost where applicable (amount varies by trip). - School pictures (variable). - From Grade 4 onwards, students must have their own laptop with access to Google Workspace or Microsoft Office (family purchase). - Homework club / Garderie / After‑school activities: these are charged in addition to tuition; the school's after‑school services list a standard rate of EUR 10 per hour for Homework Club (PYP 1–5) and Garderie (5:00–6:00 pm). - Hot lunch (annual charge): example published annual hot‑lunch fees for 2025–2026 were EUR 1,608 for PYP and EUR 1,488 for MYP 1–3; hot‑lunch billing is handled separately and payment instructions (bank transfer) are supplied on the hot‑lunch order form. Boarding and transport - Montgomery International School is a day school; the school does not operate its own school bus service and families typically use third‑party transport providers. There are no boarding fees. Billing schedule and payment terms (summary of published practice and available public details) - Tuition figures are published as annual amounts for the 2026/2027 academic year. The school's admissions steps indicate that the family submits enrolment documents and payment in order to secure a seat and that families are asked to upload proof of payment as part of enrolment. The public fee page does not list a detailed invoice schedule or standard instalment dates for tuition; the school's published materials (e.g., specific programme forms and admissions policy) show that payments by bank transfer with proof of payment are used for specific items. Refund information - Waiting‑list fee: the published admissions policy states that the EUR 2,000 waiting‑list payment is refundable if the family chooses not to enrol after being offered a seat (the policy specifies a two‑week confirmation window and refund conditions). - No other specific refund schedule for tuition or registration is published on the school's publicly posted tuition page for the 2026/2027 fees (refund terms for other fees are not specified in the public fee summary). Fee payment options and bank details (as shown on published school forms) - Bank transfer is used for fee payments shown on school forms. The school account shown on hot‑lunch and other school forms: Banque Fortis — IBAN BE64 0015 8979 6452 — BIC GEBABEBB (payment forms instruct families to send proof of payment). - The admissions process requires families to upload proof of payment to complete enrolment steps. Summary of key fee figures (2026/2027) - Annual tuition (PYP1–PYP5): EUR 26,000; per term EUR 8,666.67. - Annual tuition (MYP1–MYP3): EUR 27,850; per term EUR 9,283.33. - Annual tuition (MYP4–MYP5): EUR 28,950; per term EUR 9,650.00. - Annual tuition (DP1): EUR 33,100; per term EUR 11,033.33. - Annual tuition (DP2): EUR 33,750; per term EUR 11,250.00. - One‑time registration fee (new students): EUR 2,000; annual administration fee (returning students): EUR 1,650. - Hot lunch (example annual rates): PYP EUR 1,608; MYP 1–3 EUR 1,488 (hot‑lunch payments require bank transfer details and proof of payment on the order form). (Where an exact billing timetable, instalment plan schedule, or a broader set of published payment methods for tuition was not listed on the public tuition page, the school's admission materials and payment forms indicate that payment by bank transfer with proof of payment is used for named items and that families must submit payment to secure a place. For enrolment, refer to the school's admissions procedure which sets out that payment is required to secure a seat and proof of payment must be uploaded.)	Fee details Application fee - Application fee (all grades): EUR 2,000. Tuition fees (annual) — by year group - Preschool (ages 2.5–3): EUR 22,590. - Pre‑Kindergarten (4 years old): EUR 25,030. - Kindergarten (5 years old): EUR 37,760. - Grades 1–2 (ages 6–7): EUR 40,670. - Grades 3–6 (ages 8–11): EUR 41,400. - Grades 7–9 (ages 12–14): EUR 46,825. - Grades 10–12 (ages 15–18): EUR 49,715. - Intensive Learning Support (for ILS students): EUR 25,155 plus the relevant grade‑level tuition. Per‑term (how fees are presented and typical payment structure) - Fees are published and invoiced on an annual basis; the school issues invoices annually in May for the following school year. Because fees are set and invoiced annually, there is no official per‑term charge published. Families may choose the school's instalment plan, which spreads the annual tuition into monthly payments; the instalment plan divides tuition into up to 10 monthly payments (July–April). For simple budgeting, an approximate per‑term figure can be obtained by dividing the annual tuition by the number of academic terms you choose to use for your own budgeting (the school does not publish an official per‑term schedule). Billing schedule and payment terms - Invoices for the following school year are issued annually in May. - Invoices for students joining during the school year are issued before the enrolment date. - Invoices are payable within 30 days of the invoice date or prior to the student's start date. - The parent (or legal guardian) is always responsible for payment of school fees regardless of any employer arrangements. Payment methods and terms - All fees are due and payable in EUR. Payments can be made by bank transfer to The International School of Brussels at BNP Paribas Fortis. - Bank transfer details (for payments by bank transfer): SWIFT: GEBABEBB; IBAN: BE71 2100 5790 1069. - Consolidated monthly invoices (for items such as lunch, athletics, music, ISB Plus) can be paid by bank transfer or by direct debit (SEPA mandate). - There is no published option on the fee page for credit‑card payment; available options shown are bank transfer and SEPA direct debit. Instalment / payment plan - A family instalment scheme is available to individuals (not open to companies paying tuition). - Typical administrative fee: EUR 200 per family, annually. - The instalment calculation uses the cost of tuition plus an interest rate of 1% above the current EUR Central Bank rate and may be divided into up to 10 monthly instalments (July–April). - The instalment scheme applies only to tuition fees (does not include bus fees or other related costs). Bus fees - Return trip (annual): EUR 3,140. - One‑way only (annual): EUR 2,385. - Bus fees are charged annually; there is no reimbursement of bus fees due to an inability to use the service. - The school offers a separate payment plan for families who would otherwise find it difficult to pay the annual bus fee. Other costs and optional charges - Cafeteria: daily lunch is paid through student lunch accounts; a lost lunch card carrying fee of EUR 10 will be billed if a card is lost. - Co‑curricular activities and ISB Plus: costs for clubs, activities and ISB Plus are optional and billed through the consolidated monthly invoice. - Musical instrument rental: EUR 210 per year (rental from the school). - Athletics fees: billed per season/per sport; typical player fees noted are EUR 270 for JV/Varsity teams and EUR 170 for U14 teams (additional travel costs for tournaments billed separately). - International Baccalaureate Diploma Programme: students taking the IB will be billed for IB exam and administrative fees and any external examination expenses requested by the student. - Other potential costs (examples): school trips, seasonal team travel, specialty courses, therapy or additional student support services — these are billed as they occur via the consolidated invoice. Refunds, adjustments and pro‑ration - Students who leave early: for students who have paid the full tuition (and bus, where applicable) and who leave before the last day of January, 25% of the tuition (and bus) fee will be reimbursed by the school. If a student leaves after the last day of January, there is no reimbursement of fees already paid. - Students who enrol late: the school publishes monthly pro‑rata amounts by level (the published schedule shows the reduced amounts for each month if a student starts after the academic year begins). The published pro‑rata schedule is used to calculate fees for late enrolment and for partial months; students starting within a month will be asked to pay for the full month. Boarding - Boarding is not provided as a standard full‑time option; the International School of Brussels operates as a day school for its student population. (Overnight/boarding arrangements may be referenced only in limited, event‑specific contexts such as camps where temporary overnight accommodation is arranged.)
Diving deeper	Diving deeper
Boarding arrangements	Boarding arrangements —	Boarding arrangements —
Uniform requirement	Uniform requirement —	Uniform requirement —
Food options	Food options —	Food options —
House system	House system —	House system —
Governance and ownership	Governance and ownership —	Governance and ownership —
Academics	Academics
Curriculum details	Curriculum details The school offers an IB programme with two options: an English-language programme with French as a second language, and a bilingual English–French immersion programme. The IB continuum includes Primary Years Programme (PYP), Middle Years Programme (MYP) and Diploma Programme (DP).	Curriculum details ISB uses English as the main language of instruction. French is offered from age 2.5, with a French bilingual programme from Grade 5; additional language options include Dutch, Spanish, and Japanese. The Home Language Programme integrates languages spoken at home into the curriculum. The curriculum is flexible and inquiry-based, with personalised learning pathways across ECC to High School.
Student teacher ratio	Student teacher ratio —	Student teacher ratio 7:1
Exam results	Exam results 100% pass rate for the IB Diploma Programme for seven consecutive years; average 34 points; 50% of students graduate with the bilingual or the advanced bilingual diploma.	Exam results IB Diploma results for 2025 show 160 graduates, 141 IB Exams taken, 118 Diploma candidates, 27% of IB Courses with accommodations, an average IBDP score of 35, a 100% pass rate, 49% bilingual diplomas, and an average Course score of 5.5. AP results show 84 students (Grades 9–12) completed 136 exams in 13 subjects, with an average AP score of 3.84, 90% of exams scoring 3 or higher, 103 students taking AP Exams, 19 AP subjects taught, and 44% achieving a perfect score of 5. BTEC results show a 100% pass rate with 2 pathways offered and 33 students taking BTEC, with 27 students working towards external BTEC qualifications.
Higher education progression	Higher education progression Graduates have been admitted to universities worldwide, including Bocconi University (Italy), Delft University of Technology (Netherlands), Erasmus University Rotterdam (Netherlands), Essec (France), Imperial College London (UK), King's College London (UK), KU Leuven (Belgium), Maastricht University (Netherlands), McGill University (Canada), Sciences Po Grenoble (France), Sorbonne (France), Université Libre de Bruxelles (Belgium), University College London (UK), University College of Utrecht (Netherlands), University of Amsterdam (Netherlands), University of British Columbia (Canada), University of Edinburgh (Scotland), University of Glasgow (Scotland), University of Saint Andrews (Scotland), and University of Toronto (Canada).	Higher education progression ISB offers five graduation pathways, including IB Diploma, AP, BTEC, US Diploma, and another pathway. Universities worldwide offered ISB students places in 2024-25, demonstrating strong progression to higher education globally.
Gifted and talented	Gifted and talented —	Gifted and talented The Inclusion & Challenge Department provides High-Ability Programmes for advanced learners.
Academic calendar	Academic calendar —	Academic calendar —
Wellbeing & support	Wellbeing & support
Social & emotional learning	Social & emotional learning —	Social & emotional learning —
Special educational needs (SEN)	Special educational needs (SEN) —	Special educational needs (SEN) —
English as an additional language	English as an additional language —	English as an additional language —
Mental wellbeing	Mental wellbeing —	Mental wellbeing —
Safeguarding	Safeguarding —	Safeguarding —
Safeguarding policy	Safeguarding policy —	Safeguarding policy —
Facilities	Facilities
Facilities overview	Facilities overview —	Facilities overview —
Sports facilities	Sports facilities —	Sports facilities —
Academic facilities	Academic facilities —	Academic facilities —
Extra curricular facilities	Extra curricular facilities —	Extra curricular facilities —
Parent experience	Parent experience
History	History —	History —
Community	Community —	Community —
Parent teacher association	Parent teacher association —	Parent teacher association —
Extra-curricular	Extra-curricular
Academic & intellectual	Academic & intellectual —	Academic & intellectual —
Arts & creative	Arts & creative —	Arts & creative —
Cultural & language	Cultural & language —	Cultural & language —
Social & hobbies	Social & hobbies —	Social & hobbies —
Community & service	Community & service —	Community & service —
Leadership & professional	Leadership & professional —	Leadership & professional —
Lifestyle & wellbeing	Lifestyle & wellbeing —	Lifestyle & wellbeing —
Language provision	Language provision
Language provision	Language provision —	Language provision —
Bilingual teaching	Bilingual teaching —	Bilingual teaching —
Immersion programs	Immersion programs —	Immersion programs —
Reputation	Reputation
Awards	Awards —	Awards —
Accreditations	Accreditations —	Accreditations —
Admissions	Admissions
Admissions	Admissions Schedule a virtual appointment or a school visit with the link we will send you. Meet with our Admissions Team. Apply on our Open Apply Admissions platform to begin the formal application. STEP 2: Share your child's last two years of school reports when applicable. Submit a reference when applicable. The admissions team reviews these documents to assess fit with MIS programs and language expectations. STEP 3: Grade placement is confirmed based on submitted documents and any necessary assessments. A place is offered at MIS once placement is determined. Where necessary, placement tests in Math, English and/or French may be requested to determine the best course of study. The outcome ensures registration aligns with the PYP, MYP or DP track. STEP 4: Fill out the enrolment forms on our Admissions Portal and upload the proof of payment. The enrollment forms complete the formal enrollment, and payment confirms the registration. Parents may receive confirmation that the enrollment is submitted and moving to final steps. STEP 5: Student is enrolled. Our team will be in touch to schedule a placement test (if applicable) and confirm the first day of school. You will be contacted with next steps, including start date and any onboarding information.	Admissions 1. Submit the ISB admissions application with the required application fee. The application form must be accompanied by the application fee, and applications will not be processed until the full application fee is paid. If the application is withdrawn, 50% of the fee is refunded; if a Financial Aid application is denied or the family does not accept the offer and withdraws, 75% is refunded; if a completed application is placed in a waiting pool for 60 days and the family cancels, a full refund is available. 2. After the completed application is received, an admission decision is typically issued within 7 to 10 working days. A decision may be delayed if additional information is needed or during school-holiday periods. 3. Students can join ISB at any point during the school year, typically before 1 May. A suitable start date is determined in collaboration with the family and approved by the Head of School. IB Diploma students cannot begin after the beginning of October if their courses are not transferable to ISB. 4. Grade-level placement is based on the prior educational experience and the student's age. In some cases, a placement test may be given to accurately place a student. 5. The ISB Bus Service is the most popular transport for commuting to and from school. Some students may use public transportation, ride a bike, or be dropped off and picked up by their parents. 6. ISB runs waiting lists when necessary. When classes are full, a waiting pool for the affected class is opened, and the Admissions Team explains how waiting pools are managed. 7. ISB offers a limited number of financial aid opportunities each year based on eligibility criteria. ISB also provides an English Language Development Programme at all levels to support non-English-speaking students. 8. ISB has an Inclusion and Challenge Programme to meet learning needs and ensure appropriate placement. 9. The school day hours vary by section: ECC Preschool 08:40–15:30 (Mon, Tue, Thu, Fri) and 08:40–12:30 (Wed); ECC Pre-Kindergarten 08:40–15:30 (Mon, Tue, Thu, Fri) and 08:40–12:30 (Wed); ECC Kindergarten–Grade 2 08:40–15:35; Elementary School 08:40–15:35; Middle School 08:35–15:40; High School 08:35–15:40.
Scholarships	Scholarships —	Scholarships ISB offers a Financial Aid Programme to assist families experiencing temporary financial hardship; the aid is primarily designed for existing families and is available for a maximum of two consecutive years. Applications for Financial Aid must be submitted with the regular ISB application and supporting materials, and are considered up to March 31 until the budget is exhausted. ISB also offers a Scholarship Programme for merit-based scholarships open to students of all nationalities; these scholarships are offered for two consecutive years for Grades 7–12 and are designed to provide access to ISB for students not currently in the ISB community; scholarship criteria include English skills, high achievement in English, alignment with ISB's values and mission, overall academic achievement, and demonstrated talents. All scholarship applicants must complete the Scholarship Programme Form and attach supporting materials. Applications for the next school year should be received by March 31. The Scholarship Committee includes the School Director, the Director of Advancement, the Director of Finance and Operations, the Finance Manager, and an Academic Panel. For further questions about scholarships, contact the Admissions Office.
Waitlist	Waitlist —	Waitlist Yes, ISB runs waiting lists when classes are full. A waiting pool is opened for the affected class, and the Admissions Team explains how waiting pools are managed. Waiting lists help accommodate students when space becomes available.
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