Japan's capital Tokyo is unlike any other international school market in Asia. In Singapore or Dubai, international schools are built around transient expat communities — families rotate through on three-year assignments and the schools cater to that churn. In Tokyo, the dynamic is different. Roughly 40-50% of students at many international schools are Japanese nationals whose parents have decided, often at considerable social cost, to step outside the Japanese education system entirely. That changes the culture in ways that matter: these families aren't leaving in two years. They're invested in the community long-term.
The result is a city with 47 international schools that feel more rooted than most. There's real institutional memory here — Saint Maur has been operating since 1872, Nishimachi since 1949, Christian Academy in Japan since 1950. These aren't franchise outposts. They're Tokyo schools, deeply embedded in their neighbourhoods and shaped by over a century of serving families who chose to be here.
But Tokyo is also expensive, sprawling, and — let's be honest — not always easy for newcomers to navigate. The schools are scattered across a metropolitan area that stretches from Minato-ku's embassy district to the suburban campuses of western Tokyo and even into Yokohama and Chiba. Commute times matter more here than in almost any other city, and where you live will narrow your school options faster than any curriculum preference.
Here's what I've learned from digging through the data, talking to families, and comparing the numbers.
The curriculum landscape
Tokyo's 47 international schools offer 26 distinct curriculum types, but the market splits along four main lines. Understanding where you sit will immediately halve your shortlist.
British (IGCSE & A-Levels)
Seventeen schools in Tokyo offer some form of British curriculum — the single largest category. This ranges from full British National Curriculum through IGCSE at 16 and A-Levels at 18, to schools that blend British foundations with other frameworks.
The British School in Tokyo (BST) is the clear flagship, with 1,400 students, 60+ nationalities, and a Showa campus (secondary) that offers the full pathway to A-Levels. Class sizes are capped at 22, and every teacher holds UK teaching qualifications (B.Ed. or PGCE). BST's new Azabudai primary campus, opened in 2023, is purpose-built and located in one of Tokyo's most exciting redevelopment areas. With 160+ extracurricular clubs, the school offers the kind of breadth you'd expect from a top London day school — except the commute might involve the Yamanote Line.
Further down the British spectrum, Rugby School Japan brings the pedigree of one of England's oldest public schools to a campus in Kashiwa (Chiba Prefecture). At 300 students with class sizes averaging 15, it's intimate by British school standards, offering IGCSE and A-Levels with a house system lifted directly from the English boarding school tradition. The 5:30 PM finish time and available supervised care suggest a longer school day with more structure — useful for working parents.
The honest pro: British qualifications are the most globally portable system in international education. IGCSE and A-Level grades are instantly understood by universities in the UK, Australia, Canada, Europe, and increasingly the US. If your family moves every few years, that consistency matters enormously.
The honest con: the system narrows fast. By Year 12, your child is studying three or four subjects. Brilliant generalists who love both physics and literature will be forced to choose in a way the IB wouldn't require.
International Baccalaureate (IB)
Fourteen schools in Tokyo offer IB programmes, and several are full-continuum schools running PYP, MYP, and Diploma Programme end to end.
K. International School Tokyo (KIST) is the IB purist's choice — it's IB and nothing else, from age 2 through to 18. With 660 students from 45 nationalities and class sizes of 24, it's large enough for genuine diversity but small enough that every student is known. KIST has been MEXT IB Authorized (a specific Japanese government recognition), and its location along the waterfront in Koto-ku gives it a campus feel that's rare in central Tokyo.
St Mary's International School is one of Tokyo's heavyweights: 864 students, 51 nationalities, founded in 1954 on a Setagaya-ku campus with a heated indoor pool, four tennis courts, and a multi-purpose field. The school runs a full IB programme and draws roughly 58% international students against 42% Japanese nationals — a balance that creates genuine cultural mixing rather than parallel communities. Class sizes average 21, with thoughtful caps of 18 in kindergarten.
Seisen International School, also in Setagaya-ku (Yoga), blends IB with Montessori in the early years and a Catholic ethos throughout. Founded in 1962 by the Handmaids of the Sacred Heart, it now serves 694 students in a co-ed setting. MEXT IB Authorized and EARCOS accredited, Seisen is particularly strong at the PYP and MYP levels. If you want IB rigour combined with a values-driven education and a warm community feel, Seisen deserves a visit.
The honest pro: the IB Diploma is academically demanding in ways that universities love. The combination of six subjects, Theory of Knowledge, the Extended Essay, and CAS produces students who can write, research, and manage their time. For competitive US and UK university applications, an IB score above 38 opens doors.
The honest con: not every teenager handles the relentless breadth of the IB Diploma well. If your child excels in STEM but struggles with languages, the forced balance can be genuinely stressful. I've seen families switch out mid-programme. It's not a failure — it's a recognition that one size doesn't fit all.
Montessori
Tokyo has a genuine depth of Montessori education that you won't find in most Asian cities — twelve schools offer some form of Montessori curriculum, ranging from preschool-only programmes to full primary pathways.
The Montessori School of Tokyo in Minami Azabu (Minato-ku) is the purest expression: Montessori and nothing else, from age 2 to 15. With 200 students, 20+ nationalities, and a 60/40 international-to-local split, it's a genuinely diverse community. The multi-age classrooms are classic Montessori — Little People (max 18), Sunshine (max 25), Lower Elementary (max 25), Upper Elementary (max 35), and Middle School (max 20). No uniforms, a private catering lunch service, and a school bus system make the logistics manageable.
Chuo International School in Chuo-ku blends Montessori with Cambridge IGCSE, which is an interesting combination — the freedom and self-direction of Montessori in the early years, transitioning to the structure of an internationally recognized qualification framework. Founded in 2016, it's one of Tokyo's newer schools, with 250 students and 30 nationalities. Fees are among the most transparent: around 920,000 to 1,460,000 for early years and 1,432,000 for primary — roughly $6,300 to $10,000 USD per year, which is solidly affordable by Tokyo standards.
American and other curricula
Nishimachi International School in Motoazabu (Minato-ku) is Tokyo's most respected American-curriculum school, serving 473 students from 38 nationalities across Kindergarten to Grade 9. Founded in 1949, it's a Minato-ku institution — literally embedded in the neighbourhood, with a compact campus that trades sprawling sports fields for a rooftop turf area and a tight-knit community. Every student studies Japanese daily, regardless of background. Class sizes are capped at 20, and the 3:7 local-to-international ratio means your child will be surrounded by peers from around the world, not just Americans.
Christian Academy in Japan (CAJ) in Higashikurume offers an American curriculum with a Christian foundation, serving 492 students from 25 nationalities. Class sizes average 17. The campus — a regulation turf field, 18,000-volume library, three tennis courts — is impressive for western Tokyo. Founded in 1950, it originally served missionary families and retains that heritage; a pastor's recommendation is part of the admissions package, which signals the community this school builds around.
You'll also find German curriculum at Deutsche Schule Tokyo Yokohama (Abitur pathway, ages 3-18), French at The French-Japanese International School of Tokyo, and Canadian options at Bunka Suginami Canadian International School and Canadian International School Tokyo.
What things actually cost
Tokyo school fees are quoted in Japanese Yen (JPY). I'll include approximate USD equivalents at the current rate of roughly 145 JPY to 1 USD. The yen's weakness against the dollar is, frankly, a gift for dollar-earning families right now — schools that would be eye-wateringly expensive at the 2021 exchange rate of 110 JPY/USD are suddenly 25% cheaper in real terms.
Budget tier: 900,000 - 1,500,000 per year ($6,200 - $10,300 USD)
This is where Tokyo's international school market diverges sharply from Singapore or Hong Kong. You can actually get a credible international education here for under $10,000 a year. That's not a typo.
Chuo International School leads this tier with fees of 920,000 to 1,460,000 ($6,300-$10,000 USD) for a Montessori-IGCSE programme. Thirty nationalities, class sizes of 15, a Chuo-ku location — this is genuinely good value. Apple Learning International School, blending Montessori with Indian CBSE curriculum, comes in even lower at approximately $4,400-$5,400 USD for ages 2-9.
Tokyo International Public School offers a British/Montessori hybrid at around 870,000 ($5,961 USD) for ages 3-11, making it one of the most affordable options in the city.
Who it's for: self-funded families, entrepreneurs, or anyone who's looked at the premium tier and thought "absolutely not." These schools deliver real curricula at a fraction of the cost. Your child won't have a swimming pool on campus, but they'll get qualified teachers and genuine international diversity.
Mid-range: 1,500,000 - 2,500,000 per year ($10,300 - $17,200 USD)
This is the sweet spot for most Tokyo expat families — where quality and cost find a reasonable balance.
Many of the established schools fall into this bracket, though not all publish their fees openly. Laurus International School of Science, with its IGCSE pathway and STEM focus across nine Tokyo and Kanagawa locations, sits here — 1,500 students make it the largest international school operation in the greater Tokyo area. CGK International School in Yokohama offers full IB (PYP and MYP) with class sizes averaging just 14 students.
Premium tier: 2,500,000+ per year ($17,200+ USD)
The top of the Tokyo market, where the established names live.
International School of the Sacred Heart (ISSH) in Hiroo (Shibuya-ku) is the most transparent about its pricing: 2,560,000 to 2,880,000 per year ($17,700-$19,900 USD) depending on year group. For that, you get an American/Catholic/IB education with 576 students, 50 nationalities, and a campus in one of Tokyo's most desirable residential areas. Class sizes are capped at 22 in lower school and 25 in upper — reasonable for the price point.
The British School in Tokyo, St Mary's International School, and K. International School Tokyo all sit in this tier. BST's 1,400-student operation with its new Azabudai campus is the premium British option; St Mary's and KIST are the IB equivalents.
Here's the perspective that matters: Tokyo's "premium" tier tops out around $20,000 USD. In Singapore, that's mid-range. In Hong Kong, it's barely entry level. Thanks to the weak yen, Tokyo is now arguably the best value for premium international education among Asia's major cities. A school like BST or St Mary's would cost $35,000-$45,000 in Singapore for an equivalent experience.
The hidden costs
As everywhere, tuition is just the headline number. Budget for:
- Application/registration fees: 200,000 to 500,000 ($1,400-$3,450) — usually one-time and non-refundable
- School bus: 200,000 to 500,000 per year ($1,400-$3,450) — and in Tokyo's sprawl, many families need it
- Uniforms: 50,000 to 150,000 ($350-$1,000)
- Lunch: most schools offer optional catering; budget 100,000-150,000 ($700-$1,000)
- Laptops: many schools require specific devices from Grade 5 onwards
- EAL (English as an Additional Language): some schools charge separately; others include it
A realistic all-in budget is 15-20% above published tuition. For a school charging 2,700,000 in tuition, expect 3,100,000-3,250,000 ($21,400-$22,400 USD) once everything is included. Still dramatically cheaper than the equivalent in Singapore or Hong Kong.
Schools worth a closer look
Here are ten schools across the spectrum that I'd recommend visiting. I've deliberately included a range of price points, curricula, and personalities — because the right school for your family depends on your child, not on a ranking.
The British School in Tokyo
Curriculum: British, IGCSE, A-Levels | Ages: 2-18 | Students: 1,400 | Class size: 22
Tokyo's flagship British school and one of the largest international schools in Japan. The dual-campus setup — Azabudai for primary, Showa for secondary — gives each division its own identity while maintaining a unified school culture. Sixty nationalities, UK-qualified teachers throughout, and 160+ extracurricular clubs. The new Azabudai campus in the Toranomon-Azabudai Hills development is architecturally striking and puts primary students in the heart of one of Tokyo's most ambitious urban projects. If you want a straightforward British education delivered at a high level, BST is the obvious choice.
K. International School Tokyo
Curriculum: IB (PYP, MYP, DP) | Ages: 2-18 | Students: 660 | Class size: 24
The IB purist's school. KIST offers nothing but IB from start to finish, which means there's no curriculum compromise — every teacher, every assessment, every unit of inquiry is designed within the IB framework. Forty-five nationalities, MEXT IB authorization, a waterfront Koto-ku campus, and genuine commitment to bilingualism (Japanese is taught alongside English throughout). The one caveat: English language support stops at Grade 8, so late arrivals who aren't yet fluent in English need to factor that in.
International School of the Sacred Heart
Curriculum: American, Catholic, IB | Ages: 3-18 | Students: 576 | Fees: 2,560,000-2,880,000 ($17,700-$19,900)
Founded in 1908 in Hiroo (Shibuya-ku), ISSH has over a century of history serving Tokyo's international community. The American/IB dual pathway gives families flexibility — your child can pursue either track without changing schools. Fifty nationalities and a genuine commitment to "whole-person education" that feels earned rather than marketed. The Hiroo location is embassy territory, walkable and safe, surrounded by some of Tokyo's best residential neighbourhoods. EARCOS accredited.
St Mary's International School
Curriculum: IB | Ages: 2-18 | Students: 864 | Class size: 21
One of Tokyo's grand old schools — founded in 1954, now serving 51 nationalities on a Setagaya-ku campus with facilities that rival any in the city. The heated indoor pool, four tennis courts, and multi-purpose field give St Mary's a physical plant that most Tokyo international schools can only dream of. The 42:58 local-to-international ratio creates authentic cultural exchange. Registration deadline is November 1, earlier than most — if St Mary's is on your list, don't wait.
Seisen International School
Curriculum: IB, Montessori, Catholic | Ages: 3-18 | Students: 694 | Class size: 20
Seisen combines IB academic rigour with Montessori pedagogy in the early years and a warm Catholic community ethos. Located in Yoga (Setagaya-ku), the campus sits in a quiet residential area that feels far removed from the intensity of central Tokyo. The school provides teaching assistants through Grade 2, 1:1 technology from Grade 6, and school bus service. MEXT IB Authorized and EARCOS accredited. Seisen families I've spoken with consistently emphasize the community — parents are genuinely involved, and the school feels like a village within the city.
Nishimachi International School
Curriculum: American | Ages: 5-15 | Students: 473 | Class size: 19
Nishimachi is a Tokyo institution. Founded in 1949 in Motoazabu (Minato-ku), it's been educating international families for over 75 years, and its commitment to bilingualism is genuine — every student studies Japanese daily. The 1:1 device programme runs from Kindergarten, and the STEAM lab, discovery play room, and rooftop turf facilities make creative use of a compact urban campus. Nishimachi only goes to Grade 9, which means your child will need to transition to a secondary school at 15 — but for families who value deep bilingualism and a tight-knit community in the early and middle years, it's hard to beat. EARCOS member.
Saint Maur International School
Curriculum: British, IB, Montessori, IGCSE | Ages: 3-18 | Class size: 15
Tokyo's oldest international school, founded in 1872. Let that sink in — Saint Maur has been educating international students in Japan since the Meiji era. Now based in Yokohama's Naka Ward, it serves 458 students from 35 nationalities with an unusually broad curriculum: British, IB (PYP and MYP), Montessori in the early years, and IGCSE. Class sizes average just 15 with a cap of 20 — some of the smallest in the region. The 100% university matriculation rate speaks to outcomes. Note: Saint Maur only accepts international students and Japanese returnees (2+ years abroad), which shapes the community in deliberate ways. MEXT IB Authorized.
Malvern College Tokyo
Curriculum: British, IB (PYP, MYP) | Ages: 4-16 | Students: 350 | Class size: 19
The newest entrant from a prestigious British school brand, Malvern College Tokyo is building its programme from the ground up in Kodaira (western Tokyo). Currently serving ages 4-16 with plans to add the IB Diploma Programme, it's a hybrid British-IB school with capacity for 950 students — meaning there's room to grow. The 50:50 Japanese-to-international student ratio is by design. Bus routes run from Azabujuban, Hiroo, and Roppongi, bridging the gap between the suburban campus and central Tokyo. MEXT IB Authorized. If you want to get in early at a school with serious institutional backing and a clear growth trajectory, Malvern is worth watching.
The Montessori School of Tokyo
Curriculum: Montessori | Ages: 2-15 | Students: 200
Pure Montessori from toddlers through middle school, located in Minami Azabu (Minato-ku) — one of Tokyo's most prestigious addresses. Twenty nationalities, a 60/40 international-to-local split, and roughly one-third European families give it a distinctly cosmopolitan flavour. The multi-age classrooms, self-directed learning, and absence of uniforms mark this as a school with genuine philosophical commitment rather than Montessori as marketing. No gymnasium on-site (they partner with a local facility), which is the trade-off of an urban Minato-ku location.
Chuo International School
Curriculum: Montessori, IGCSE | Ages: 1-11 | Students: 250 | Fees: 920,000-1,460,000 ($6,300-$10,000)
The value pick on this list, and I don't mean that as faint praise. Chuo International offers a Montessori-IGCSE pathway for under $10,000 a year — in central Tokyo (Chuo-ku), with 30 nationalities and class sizes of 15. Founded in 2016, it's young but growing fast, with a house system (Emerald Feathers, Sapphire Shells, Crimson Hoppers, Golden Roars) that creates community beyond the classroom. STEAM, arts, karate, ballet, and basketball round out the extracurriculars. The only limitation is age range — it currently serves up to age 11, so you'll need a secondary school plan.
Neighbourhoods and commutes
Where you live in Tokyo matters more than almost any other factor in your school decision. This is not a city where you choose a school and then find a flat nearby — in practice, most families choose a neighbourhood for quality of life and then narrow their school options based on commute feasibility.
Minato-ku (Azabu, Hiroo, Roppongi)
The epicentre of Tokyo's expat community and home to most embassies. You'll find The British School in Tokyo (Azabudai campus), Nishimachi International School, International School of the Sacred Heart, and The Montessori School of Tokyo all within walking or short taxi distance. Rent is the highest in Tokyo — expect 300,000-600,000 per month ($2,000-$4,100) for a family-sized apartment — but the convenience of having schools, supermarkets catering to international residents, and English-speaking services nearby is unmatched. If your budget allows it and you value walkability, this is where most expat families with young children land.
Shibuya-ku (Hiroo, Ebisu)
Adjacent to Minato-ku and sharing much of its character, Shibuya-ku is home to International School of the Sacred Heart in Hiroo. Slightly more residential and less embassy-centric than Azabu, with excellent train connections. A good balance of expat amenities and authentic Tokyo neighbourhood life.
Setagaya-ku (Yoga, Seijogakuen)
The preferred residential district for families who want more space. St Mary's International School and Seisen International School are both here, and the leafy streets, larger apartments, and family-friendly parks make Setagaya Tokyo's closest equivalent to a suburb — while still being on the Tokyu Den-en-toshi and Odakyu lines for quick access to central Tokyo. Rent is 20-30% lower than Minato-ku for comparable space.
Yokohama and Kanagawa
Saint Maur International School, Horizon Japan International School, and CGK International School are all based in Yokohama. The 30-40 minute train ride from central Tokyo means these schools are realistically only an option if you live in Yokohama or southern Tokyo. But Yokohama itself is a fantastic city for families — international, cosmopolitan, with lower rent than central Tokyo and a waterfront lifestyle. If you work remotely or your office is in southern Tokyo, don't overlook Yokohama schools. The quality is as high as anything in the 23 wards.
Western Tokyo (Kodaira, Higashikurume)
Malvern College Tokyo in Kodaira and Christian Academy in Japan in Higashikurume offer campus-style facilities — sports fields, open space, proper gymnasium complexes — that are simply impossible in central Tokyo. The trade-off is a longer commute if you live in the city centre. These schools run bus services from central stations, but a 45-60 minute commute each way is the reality for most families. If you value green space, lower rent, and a campus that doesn't feel squeezed into an urban footprint, western Tokyo works beautifully.
Admissions: what to know
Timing matters
Tokyo's international school year typically starts in August or September (aligning with the international calendar), though some schools follow the Japanese April start. Application deadlines vary widely: St Mary's closes applications on November 1 for the following year, while many other schools accept rolling admissions year-round. If you have a specific school in mind, contact admissions six to twelve months before your intended start date.
Assessment and entry
Nearly every school requires some form of assessment — typically English and maths proficiency, often combined with a family interview. Schools like KIST explicitly state that English language support ends at Grade 8, so late arrivals without strong English face a genuine constraint at the secondary level. Saint Maur only accepts international students and Japanese returnees, adding another filter.
Waitlists are real
Tokyo's most popular schools — BST, St Mary's, KIST, Nishimachi — maintain active waitlists for most year groups. This is not a market where you can show up in August and find a spot at your first-choice school. Register early, even if your move date is uncertain.
The Japanese connection
One thing that sets Tokyo apart: many international schools actively integrate Japanese language and culture into their programmes. At Nishimachi, every student studies Japanese daily. At Malvern College Tokyo, the curriculum is delivered bilingually. If you're planning to stay in Japan long-term — or if your children might attend Japanese university — look for schools that treat Japanese as a core subject, not an elective.
The bottom line
Tokyo's international school market is more affordable than Singapore, deeper than Hong Kong, and more diverse than any other city in East Asia. The weak yen makes it arguably the best value proposition in Asia for international education right now, and the quality at the top end is exceptional.
Your shortlist will ultimately come down to three questions: Where will you live? What curriculum makes sense for your family's trajectory? And what can you afford? Start with the neighbourhood, narrow by curriculum, and then visit. Tokyo schools have distinct personalities that don't come through on a website — the warmth of Seisen's community, the academic intensity of KIST, the bilingual commitment of Nishimachi, the heritage of Saint Maur. You need to walk the corridors and talk to the parents at the gate.
Start comparing schools side by side on our Tokyo city page, or use the comparison tool to stack up fees, curricula, and class sizes across your shortlist.
