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School comparison

SISB Rayong vs Phoenix Wittaya

SISB Rayong's dated Singapore-to-Cambridge route versus Phoenix Wittaya's Thai-core bilingual pathway with an official but academically undated fee schedule.

The schools

Provision

School offer for Singapore International School Rayong and Phoenix Wittaya School
What to compareSingapore International School RayongPhoenix Wittaya School
Age spanAges 2–18; 2026/27 new applications Nursery 1–Grade 10Ages 2–17+; Nursery through Secondary 6/Year 13
CurriculumEYFS, Singapore Primary, Singapore/UK hybrid Grades 7–8, Cambridge IGCSE and AS/A-LevelThai Basic Education Core Curriculum with a school-described Cambridge-aligned bilingual programme

Tuition and other charges

A school-wide fee range is not a quote for one child. Check the academic year, exact year group, compulsory charges and what tuition includes before comparing totals.

SISB Rayong vs Phoenix Wittaya · dated 2026/27 tuition versus undated published tuition · checked 29 July 2026 · Phoenix fee page checked 10 October 2026; academic year unstated

Published costs for Singapore International School Rayong and Phoenix Wittaya School
What to compareSingapore International School RayongPhoenix Wittaya School
Published tuitionDated 2026/27: Nursery ฿401,700; Kindergarten ฿429,600; Primary ฿470,700–฿567,300; Grades 7–10 ฿609,300–฿650,700; Grades 11–12 ฿789,300.Official fee page (academic year unstated): Kindergarten, Primary and Secondary ฿154,980/year in two ฿77,490 terms; Nursery ฿12,000/month with billed months unstated.
Named extrasApplication ฿5,000; assessment ฿5,000; enrolment ฿220,000; deposit ฿50,000; resources, meals and ELS separate.Enrolment ฿40,000. Annual books: ฿3,000 Nursery or ฿8,000 Kindergarten–Secondary. Annual lunch: ฿5,000 Nursery, ฿8,000 Kindergarten/Primary or ฿10,000 Secondary. Uniform, IDs, competitions, activities, excursions, visa, bus and insurance are excluded without public tariffs.

Beyond tuition

Other practical details

Other differences and source notes for Singapore International School Rayong and Phoenix Wittaya School
What to compareSingapore International School RayongPhoenix Wittaya School
Planning pointFees reach Grade 12, but 2026/27 new applications stop at Grade 10.Obtain a dated grade-specific quote and verify what Cambridge-aligned means for subjects, examinations and final credentials.
Source documents

Before you decide

Verify the pathway, then price the year.

What needs planning?

SISB’s tariff reaches Grade 12 while 2026/27 new applications stop at Grade 10. Phoenix families need confirmation of the fee year and a complete quote plus written evidence of subject languages, examinations and final credentials.

Two all-through routes. Different credentials.

Match the actual attendance offer

Ask both schools to state the child’s proposed class, start date, age cut-off and following year. SISB publishes Nursery through Grade 12 fee rows, though 2026/27 new applications stop at Grade 10. Phoenix describes Nursery through Secondary 6/Year 13.

Do not translate Grade, Year, Primary and Secondary labels by number alone. Request the placement test, class equivalence, calendar and written progression route, particularly if a child may move between an international system and the Thai system later.

Make language exposure visible

SISB records English, Thai and Mandarin. Ask for weekly allocation, subject language, newcomer support and the transition from Singapore stages into Cambridge qualifications.

Phoenix Wittaya records Thai and English. Ask which subjects are taught in each language at the proposed stage, how English proficiency is assessed, what Thai literacy level is expected and how newcomers receive support.

At both visits, request anonymised work and the report format in each teaching language. Observe how teachers explain unfamiliar tasks and whether translation supports learning or merely task completion.

Build complete first-year totals

SISB’s 2026/27 tuition runs from ฿401,700 to ฿789,300. Application and assessment are ฿5,000 each, enrolment ฿220,000 and deposit ฿50,000. Resources are ฿30,500–฿84,000, meals ฿26,400–฿39,000 and ELS ฿20,000–฿30,000 per term.

Phoenix’s official fee page now publishes tuition, a ฿40,000 enrolment charge, annual books and lunch. It does not label the academic year; confirm the applicable year and unpriced exclusions before comparing a child-specific invoice.

Ask Phoenix for a dated offer naming the child, grade, programme, academic year, tuition, application or registration, deposit, meals, books, transport, insurance, uniforms, activities, examinations and support. A Phoenix total remains unknown until every compulsory row is written.

Plan both transfer points

SISB publishes Cambridge IGCSE and AS/A-Level after its Singapore stages. Confirm which senior grades currently operate, accept newcomers and offer each subject at the Rayong campus.

Phoenix describes Nursery through Secondary 6/Year 13, but a Cambridge-aligned programme is not automatically a Cambridge qualification. Ask which final Thai or international credential and transcript pupils receive, which examinations they enter and what English-language evidence is supplied for applications outside Thailand.

Rehearse relocation after two years. Request the transcript, curriculum map, language evidence, grading scale and teacher references each school would supply.

Audit support without assumptions

SISB publishes ELS at ฿20,000–฿30,000 per term. Phoenix Wittaya does not publish a usable language- or learning-support tariff in the sources reviewed.

If support matters, request the staff member, group size, minutes per week, review date, progress measure, exit criteria and price. Separate English acquisition from other learning needs.

Bring existing reports before assessment and ask admissions to state any limitations in writing.

Test the senior pathway with present evidence

SISB’s published sequence reaches Cambridge IGCSE and AS/A-Level, but the Rayong campus opened in 2023 and its 2026/27 new-applicant range stops at Grade 10. Ask which secondary grades are operating now, how many pupils are in each cohort, which IGCSE subjects are taught and when the first Rayong AS/A-Level cohort is expected.

Phoenix describes secondary through Secondary 6/Year 13. Ask which upper-secondary tracks run now, which subjects are taught in English, what national or international examinations apply and what university-counselling evidence the current cohort receives.

For either school, request anonymised subject-choice forms, a sample transcript, the examination calendar and the university-counselling timeline.

Compare registration and curriculum claims carefully

Phoenix appears in Thailand's Office of the Private Education Commission directory. That verifies a private-school record but does not independently verify Cambridge registration or examinations. No campus-level accreditation for SISB Rayong appears in the sources reviewed.

Ask each school for campus-specific register or examination evidence, then compare teacher qualifications, class size, homework and reporting cadence. Keep regulatory registration separate from curriculum and qualification claims.

Model discounts without inventing them

SISB publishes a 2% full-year tuition discount, sibling tuition discounts of 5% for the second child and 10% for later children, and a 20% enrolment reduction from the second child. Phoenix publishes standard tuition but no discount tariff on its undated fee page.

Ask Phoenix to state the standard price first and any concession separately. A percentage discount has no decision value without its base, duration and conditions.

Test the real family week

SISB is in Nong Taphan, Ban Khai; Phoenix Wittaya is in Nongprue. Drive both routes at arrival and collection times, including work and sibling stops.

Phoenix Wittaya advertises bus service without a current public price, and neither school supplies a comparable address quote. Ask for pickup windows, vehicle time, supervision and the exact address price. Both schools are day-only.

Finish the offer meeting

  1. Placement: exact class, live operation and next class.
  2. Learning: language allocation, programme map, work and reports.
  3. Cost: acceptance cash, first year and recurring year.
  4. Support: provision, staffing, review and price.
  5. Transition: SISB’s Singapore-to-Cambridge sequence or Phoenix Wittaya's Thai-English Ministry pathway.

Save offers, fee schedules, calendars and placement answers together.

What to observe during a visit

Test a normal morning

Arrive before the class begins and watch the transition from gate to room. Record how quickly the child separates, who welcomes them, which language adults use and whether the routine is understandable without repeated prompting. Ask what happens on a difficult morning and how parents are informed. A polished tour after children leave cannot answer these questions.

Compare learning evidence

Ask for a starting assessment, mid-year report and anonymised work from the proposed class. At SISB, trace English, Thai and Mandarin into Singapore and Cambridge stages. At Phoenix Wittaya, inspect work in Thai and English and trace how its bilingual programme covers the Thai Ministry learning standards.

Record the balance of adult-led, child-initiated, individual and group activity during the visit. Ask how teachers adapt the same task for a child who is new to English, already reading or reluctant to join a group. The right environment is not defined by one teaching philosophy; it is the setting where staff can explain how this child will participate and progress.

Check care outside lessons

Confirm arrival supervision, meals, allergies, illness procedures, late collection and activities. SISB prices meals and resources separately. Phoenix Wittaya publishes that food and bus services exist but not what a current family at a specific stage and address will pay, so both require a written inclusion list.

Place both calendars beside the family’s work calendar. Count closures that require alternative care and ask whether holiday programmes are offered, separately registered or guaranteed to enrolled pupils. A school-year tuition comparison does not capture care purchased during long breaks.

Separate address from commute

SISB is in Nong Taphan, Ban Khai; Phoenix Wittaya is in Nongprue, Banglamung. Verify each entrance, transport route and contract address before payment. Test gate queues, parking and the return journey.

Both are described as day schools in the sources reviewed. Families requiring residential care should treat that as a non-fit.

Write a conditional decision

For each school, finish the sentence: “This place works if…” Include the quoted total, language routine, classroom fit, support availability, care hours, travel ceiling and next-school plan. Then write the conditions that would trigger a review. This prevents a single attractive feature from hiding an unresolved cost or transition risk.

Run the same exercise for two future dates. At age six, both schools may be usable, but SISB's international primary sequence and Phoenix Wittaya's Thai bilingual primary sequence create different language and transfer demands. At age eleven, compare SISB's growing Cambridge transition with Phoenix Wittaya's Secondary pathway, present subject languages and support needs.

Before signing, compare the two schools’ invoice language line by line. Ask each admissions team to mark every compulsory, optional, refundable and one-time row, then calculate cash due before the first day, the complete first year and a normal later year. Confirm the unstated academic year and unpriced exclusions in a written offer.

Also rehearse a mid-year move. Ask what notice is required, which reports and curriculum records would be released, how deposits are returned and whether prepaid services are refundable. Families using the Eastern Seaboard industrial corridor should test both routes at real collection time, because a lower fee cannot compensate for an unsustainable daily journey.

Ask how each school handles a mid-year departure before assuming either transfer will happen neatly at the end of a stage. Record required notice, reports supplied, outstanding-fee conditions and whether unused services can be refunded. A family expecting relocation should weight these documented terms alongside teaching and price.

Do not pay while a condition remains material and unanswered. Ask admissions to correct the offer email, retain SISB's 2026/27 schedule and Phoenix's fee-year-confirmed personalised quote, and note who supplied every grade and support answer.

Before applying
Do both schools follow an international curriculum?

No. SISB combines Singapore and Cambridge stages. Phoenix follows Thailand's core curriculum and school-described Cambridge-aligned bilingual teaching; alignment is not independent Cambridge accreditation.

What should a SISB quote include?

Ask for grade availability, tuition, application, assessment, enrolment, deposit, resources, meals, transport, trips, devices, ELS and refund terms.

What should a Phoenix Wittaya quote include?

Ask for academic year, exact grade and programme, tuition, every entry charge, meals, transport, books, uniform, insurance, activities, examinations, language support and refund terms.