Is Trinity a full primary-to-secondary school?

No. Trinity is primary-focused, with families typically transferring to a larger international school for senior years.

What curriculum is taught?

An adapted English National Curriculum at primary level.

On Soi Suan Phlu in central Sathorn, near the same area as the LFIB campus.

Are entry exams required?

Formal exams are not required for early years; informal assessments are used for older primary entry.

What are typical fees?

Around ฿280,000–฿470,000 per year depending on year group, lower than top-tier international primary fees.

Bangkok · Sathorn (Soi Suan Phlu)

Trinity International School

Trinity International School is a small British-curriculum primary-focused school on Soi Suan Phlu in Sathorn. It serves Early Years and primary, with the English National Curriculum and small class sizes aimed at a family-style environment.

Curriculum

British

Ages Accepted

primary

Tuition Tier

₿₿

Tuition Range (THB/year)

฿280,000–฿470,000

Main Language

English

Entry Exam

Not required

Founded

2003

Website

Visit

Notes for Parents

Sathorn Soi Suan Phlu campus, walkable from Sathorn condos
Primary-focused: Early Years to upper primary
Small class sizes, family-style community
English National Curriculum
Convenient for central Sathorn, Silom and Lumphini families

Frequently Asked Questions

Accreditation

Trinity International School states on its own website that it holds the following. Read 2026-08-22; not independently confirmed with the accrediting bodies, so check directly if it is decisive for you.

ONESQAThailand's national education quality assessment
WASCWestern Association of Schools and Colleges — the US regional accreditor

Chosen by shared curriculum, city and fee band — the attributes on this page, not an editorial ranking.

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