Founded
2003

Riverside; City Campus opened 2018

Curriculum
British

ENC → IGCSE → A-level + EPQ; no IB

Years
EY1–13

~2,000 Riverside; City Campus primary-only to Year 6

Location
Charoen Krung + Rama 9

Riverside on the Chao Phraya; City Campus near MRT Phra Ram 9

Accreditation
CIS

Plus FOBISIA, HMC, ONESQA

Tuition 2025/26
THB 669,600–1,208,400

Plus THB 225,000 place fee + THB 225,000 deposit

The short version

Shrewsbury International School Bangkok runs two day-school campuses: Riverside (founded 2003), an all-through school for ages 3–18 on the Chao Phraya river, and City Campus (opened 2018), a specialist primary near Rama 9. Both teach the English National Curriculum toward IGCSE and A-levels.

Riverside enrols about 2,000 students — roughly 75% Thai nationals — and its A-level results are among the strongest at scale in the city.

For an expat family, the practical summary is this: Shrewsbury is the Bangkok choice for a rigorous British A-level pathway with a documented results record, and the City-to-Riverside guaranteed pathway is a genuine structural convenience for families with young children.

Know what you are choosing: a selective, majority-Thai-international community, privately owned, with premium fees and no IB fallback at sixteen.

Two campuses, one pathway — and a guarantee that matters

The defining mechanism is the pathway. City Campus takes children from age 2 to Year 6 in the Rama 9 area; students who complete Year 6 there are guaranteed a place at Riverside for secondary, bypassing external admissions entirely.

For a family arriving with a five-year-old, that converts a two-school problem into a single decision — and in Bangkok’s competitive senior-school market, a guaranteed Year 7 place at a top-results school has real value.

The school is a genuine sister school of Shrewsbury School in the UK — founded 1552 by royal charter — with staff movement and curriculum alignment between them, and teachers recruited mainly from the UK.

Governance is a contrast with Bangkok’s foundation schools: Shrewsbury Bangkok is privately owned — school owner Khun Chali Sophonpanich is quoted in British Club media, and the Riverside masterplan was developed with City Realty Company Ltd.

That is neither good nor bad in itself, but families weighing “not-for-profit” claims should know which model they are buying.

External assurance runs through CIS accreditation — Riverside re-accredited 2025 and City Campus newly accredited 2024 per secondary sources — plus FOBISIA membership, HMC membership and ONESQA assessment under Thai law. Unlike Bangkok Patana or Harrow, no BSO or ISI inspection report is published, so the CIS cycle carries the evidential weight.

The strongest British-exam record at scale in Bangkok

The 2025 results: 74% A*/A at IGCSE with 46% at A*, 89.4% A/B at AS level, and 65.2% A*/A at A level with 39% at A*.

These are school-reported figures — Thailand has no public inspectorate — but they are consistent with the school’s longer record: 88% A*/A at IGCSE and 86% A*/A at A level in 2021, and 34 Outstanding Learner Awards from exam boards in 2022, including 15 “Top in the World”.

The destination pattern is unusually transparent: the school’s own profile states an average graduating class sends roughly 50% to UK universities, 20% to US four-year colleges and 20% to Thai universities, with the graduating class of 144 projected to grow toward 200.

Classes run three or four A-levels plus the Extended Project Qualification, and there is no IB option — the British pathway is the whole model.

Co-curricular depth is institutionalised rather than optional: from Year 3 every child takes part weekly in the “You-Time!” programme listing over 500 activities, and students belong to one of six houses named after Nobel Peace laureates.

Facilities at Riverside include three natural-turf pitches, an Olympic-standard gymnastics hall, a three-pool aquatics centre and a 580-seat theatre, with a new Senior School building opened in 2021.

2025/26 and 2026/27 fees — both published, both premium

Shrewsbury publishes two cycles at once. For 2025/26, annual tuition runs from THB 669,600 (Nursery, City Campus) to THB 1,208,400 (Year 12, Riverside); the published 2026/27 range rises to THB 696,300–1,256,700 — roughly a 4% step, useful for modelling your own horizon.

Entry adds a THB 225,000 non-refundable Guaranteed Place Fee and a THB 225,000 refundable deposit.

At Year 12 the all-in first year approaches THB 1.66 million once the place fee is added — among the most expensive entry points in Thailand. Read the Guaranteed Place Fee for what it is: a non-refundable seat purchase, separate from tuition and from the refundable deposit.

Families comparing against Harrow (THB 225,000 admission fee) or NIST (THB 265,000 registration plus deposit choice) will find the one-time numbers similar; the differences are in refundability.

Selective at every entry point — with an EAL redirect worth knowing

Shrewsbury is academically selective at all entry points: English assessment, prior-school references, and subject testing for senior entry.

Aggregated admissions guidance notes that weaker EAL profiles can be redirected to City Campus or waitlisted rather than refused outright — a pragmatic ladder, but one to understand before assuming a Riverside offer for a child still building English.

The community composition shapes the applicant pool: with roughly three-quarters Thai nationals, competition for places includes a strong local cohort, and parent culture is more locally embedded than at NIST or ISB.

For expat families this is either a feature — genuine host-country integration — or a consideration, depending on how internationally mobile your child’s peer group needs to be.

River access, the Rama 9 option, and the school-run map

Riverside sits at 1922 Charoen Krung Road in Bang Kholaem, directly on the Chao Phraya — reachable by road, by river boat via Sathorn pier, and with BTS Saphan Taksin the nearest station.

For families in Sathorn, Silom or the river corridor it is one of Bangkok’s more civilised commutes; from Sukhumvit’s far end it is a cross-town run. City Campus, near MRT Phra Ram 9, serves the central-eastern corridor for the primary years.

The two-campus geography is the family-planning opportunity: start a young child at City Campus while living centrally, keep the guaranteed Riverside place, and only solve the river commute when secondary begins — by which time a teenager can use the boat or BTS independently.

Ask the school how the Year 6-to-7 transition is run in practice, and what share of each City Campus cohort takes up the guarantee.

Our readConfidence: Medium

Bangkok’s A-level benchmark — selective, privately owned, and transparent about results

Our confidence is Medium rather than High for one structural reason: the results are school-reported and Thailand has no public inspectorate to verify them against, and no BSO or ISI report is published for this school.

The evidence we do have is nonetheless substantial — a first-party school profile with cohort and destination data, published two-cycle fees, CIS accreditation, and a twenty-year operating record. The pathway guarantee is documented by the British Chamber directory, the closest thing to an institutional source outside the school itself.

The families Shrewsbury suits: those wanting a rigorous British IGCSE/A-level pathway with a strong documented exam record, families with young children who value the City-to-Riverside guarantee, and families who want host-country integration in a majority-Thai-international community.

The families it suits less well: IB or American pathway families, those who weight not-for-profit governance heavily, and those needing an externally inspected (BSO) evidence base. On results trajectory, it is the school Bangkok’s other British campuses are chasing.

Questions that move beyond the tour script

Admissions and the pathway

  1. For our child’s year group, what does the assessment involve, and what is the realistic timeline from application to decision?
  2. How does the City Campus to Riverside guarantee work in practice — is it unconditional, and what share of each cohort uses it?
  3. If our child’s English is still developing, how does the EAL assessment affect campus placement?

Academics and support

  1. May we see the full IGCSE and A-level results for the last three years with cohort sizes, and the university-destination list?
  2. How are A-level subject choices timetabled, and are any combinations capped?
  3. What learning-support provision exists, and how are mid-system joiners from non-British curricula supported?

Cost and logistics

  1. What is the full year-one cost for our child — place fee, deposit, tuition, bus, lunch, uniform and exam fees?
  2. Are exam fees (IGCSE, A-level) included in tuition or billed separately, and what did a typical Year 11 family pay last year?
  3. What bus routes serve each campus, and what is the morning journey from our shortlisted neighbourhoods?

Choose your next step

Where to verify and keep reading

We favor direct links to the exact page or document a family may need next. Access dates matter because admissions, tuition, leadership, and programs change.