SISB Rayong vs
ISE.

Shared early years.
Different runway.

Both schools publish dated 2026/27 tuition and separately priced entry and language-support rows. SISB’s current admissions stop at Grade 10 despite fees through Grade 12; ISE publishes an established Pre-K-to-Grade-12 pathway with WASC and IB registry evidence.

// In this guide → SISB Rayong editorial ↗ · ISE editorial ↗ · Rugby vs Regents ↗ · Garden vs Regents ↗ · Regents vs Garden ↗ · MIS vs TPIS ↗ · British schools hub ↗ · IB Diploma hub ↗

Both fee schedules are dated 2026/27, but headline tuition omits material charges. Request SISB’s grade, entry, resources, meals, ELS and transport rows alongside ISE’s tuition, entry, EAL, bus, meals, trips and examination rows.

Cambridge route.
American and IB.

Both schools begin in early years and publish a route through age 18. SISB combines three languages and Singapore stages with Cambridge qualifications; ISE combines American standards with the IB Diploma.

Match the actual attendance offer

Ask both schools to state the child’s proposed class, start date, age cut-off, core hours and following year. SISB publishes Nursery, Kindergarten, Primary and Grades 7–12 fee rows; ISE publishes Pre-K2–4, Kindergarten and Grades 1–12. Similar ages do not ensure identical placement.

SISB’s new-applicant range stops at Grade 10 despite senior fees. ISE publishes a complete route, but parents should still confirm the offered grade, present cohort and next-year progression. Put every placement answer into the written offer.

Make language exposure visible

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

ISE records English as the medium alongside Thai and Mandarin. Ask how AERO and NGSS appear in current work, which language courses are compulsory and how Grades 9–10 prepare pupils for the IB Diploma.

At both visits, request anonymised work and the report format. Observe how teachers explain unfamiliar tasks, differentiate work and support pupils new to English. Curriculum labels matter only when daily implementation is visible.

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.

ISE’s 2026/27 tuition runs from ฿357,600 to ฿646,000. Application is ฿5,000, enrolment ฿90,000 and deposit ฿50,000. EAL is ฿19,200–฿57,600 per semester; two-way bus is ฿70,000–฿93,700 a year plus distance charges beyond 61 kilometres.

ISE tuition includes classroom supplies and textbooks but excludes meals, uniforms, out-of-town trips and external examinations. SISB excludes transport, uniform, devices, examinations, trips and enrichment. Ask both schools to mark compulsory and optional lines.

Create totals for cash before attendance, the complete first year and a normal recurring year. Mark refundable deposits, one-time charges, discounts and support triggered by assessment. Use the child’s exact grade rather than the lowest published band.

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.

ISE is WASC-accredited through 2030 and has offered the IB Diploma since 2004. Ask for current Grade 11–12 subjects, cohort sizes, completion routes, university counselling and campus-level outcomes rather than assuming an authorised programme guarantees every option.

Rehearse relocation after two years. Request the transcript, curriculum map, language evidence and teacher references each school would supply, then ask a likely receiving school how placement would be decided.

Audit support without assumptions

SISB publishes ELS at ฿20,000–฿30,000 per term; ISE publishes EAL at ฿19,200–฿57,600 per semester. Neither band is a general learning-support promise. Ask what assessment triggers it, how often support runs and which lessons pupils miss.

If support matters, request the staff member, group size, minutes per week, review date, progress measure, exit criteria and price. Separate English acquisition from learning, developmental and wellbeing needs. Ask what provision lies outside the published language-support band.

Bring existing reports before assessment and ask admissions to state any limitations in writing. Compare the actual plan for this child, not the existence of a fee row.

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. A fee row through Grade 12 is useful for budgeting but is not the same evidence as a current class.

ISE’s IB World School record dates its Diploma Programme to 2004, and its WASC record is campus-specific through 2030. That is stronger external evidence of continuity, but it does not answer the child-level questions. Ask which Standard Level and Higher Level subjects run this year, what minimum enrolment each option needs, how timetable conflicts are handled and what pathway exists for a pupil who does not pursue the full Diploma.

For either school, request recent campus-level examples rather than group or brand claims: anonymised subject-choice forms, a sample transcript, the current examination calendar and the university-counselling timeline. Record what is guaranteed, what depends on cohort demand and what may require an online course or transfer.

Compare accreditation and curriculum claims carefully

ISE has direct WASC and IB registry evidence. SISB’s current ledger record does not list a campus-level accreditation, so parents should ask which examination-centre or programme approvals apply specifically to Rayong and request the relevant registry entry. Do not transfer recognition from another SISB campus simply because the brand and curriculum labels match.

Accreditation still does not make the classroom choice automatically. Compare the proposed teacher, class size, language load, homework pattern, assessment style and reporting cadence. A pupil moving from another Singapore system may find SISB’s sequence more familiar; a pupil coming from a US school may map more directly into ISE. Families arriving from British, Thai or other systems should ask both schools to explain placement using actual prior records.

Model discounts without hiding the standard price

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. ISE publishes 5% full-year tuition, sibling tuition discounts of 5%, 15% and 25% for later children, with enrolment waived from the third child.

Keep those reductions below the standard-fee comparison. Ask whether discounts can combine, which payment deadline applies, whether card surcharges offset the saving and what happens if the family withdraws. Record standard tuition, discounted cash paid and refund exposure as three separate figures so an attractive payment incentive does not obscure the underlying recurring cost.

Test the real family week

SISB is in Nong Taphan, Ban Khai; ISE is inside Burapha Golf Club in Bowin, Sriracha. Drive both routes at arrival and collection times, including work and sibling stops. Record normal and rainy-day travel.

SISB excludes transport without a published tariff. ISE publishes annual bus bands with distance charges. Ask for pickup windows, vehicle time, supervision and the exact address price. Neither school records boarding.

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 Cambridge route or ISE’s American-to-IB evidence.

Save offers, fee schedules, calendars and placement answers together. Keep every missing charge or grade commitment open until admissions confirms it in writing.