Best Schools for EAL Support in Bangkok

# Best Schools for EAL Support in Bangkok

Bangkok's international cohort is built around two distinct language streams. The first is the Thai bilingual family entering an English-medium school with strong but uneven English, often at the point of moving from a local bilingual programme into Year 7 or Year 9. The second is the expat arrival from Korea, Japan, mainland China, France or Germany whose child needs to begin the academic year doing maths, science and humanities in a language they have not yet mastered.

Every premium international school in Bangkok teaches in English. How a school manages the language gap is one of the less visible decisions a parent makes, and one of the more consequential.

What good EAL provision looks like

EAL is not learning English as a foreign language. An EAL student is a child learning in English while simultaneously learning English, sitting in a mainstream classroom doing the regular curriculum in a language they have not yet mastered.

Good EAL provision accelerates language acquisition through targeted support and keeps the child in the curriculum while that acquisition happens. A school that drops the second leaves the child overwhelmed; a school that drops the first leaves them behind.

The research on second-language acquisition is consistent. A child with age-appropriate cognitive development reaches conversational fluency in 12 to 18 months. The academic English needed for IGCSE and Diploma-level work takes 5 to 7 years. Schools that promise full fluency in a year are describing social English.

Bangkok's EAL profile is shaped by the city's demographic mix. Thai students make up a meaningful share of every premium international school here: around 20% at Patana, materially higher at Shrewsbury and Harrow, lower at NIST where the cohort runs roughly 71% non-Thai across more than fifty nationalities. The typical learner profile sits closer to the bilingual academic-register gap than to the beginner-immersion gap that defines EAL in cities with smaller bilingual populations.

How to read EAL claims in Bangkok

Every premium school in Bangkok says it welcomes children of all language backgrounds. What matters is whether the admissions meeting can answer five questions without prompting: how many children are on the EAL register, how the team is staffed by division, what model is used at which age, what framework sets the exit criteria, and how EAL teachers collaborate with subject teachers in the classroom.

A school running a paper programme answers with reassurance. We support all our students. The children settle quickly. The operational answer, ideally from the EAL lead rather than admissions, is what separates a school that does this work from one that talks about doing it.

Strongest mainstream EAL provision

Four schools sit at the front of the Bangkok EAL conversation. All four run named EAL departments inside a mainstream English-medium programme.

Bangkok Patana School

Bangkok Patana is Thailand's oldest British international school, founded in 1957 on the Bang Na campus. Around 2,300 students aged 2 to 18 from 68 nationalities, with a 20% Thai cohort. English National Curriculum through GCSE, IB Diploma at sixth form. 2025 IB average 35 points, 99% pass rate.

Patana's scale supports a sustained EAL team across primary and secondary rather than a single coordinator. New arrivals at primary enter mainstream classrooms with embedded support and targeted pull-out where it helps. Secondary entry is selective on English. The recurring caveats on Patana, school politics and patchy follow-through on bullying, sit outside the EAL function.

NIST International School

NIST is Thailand's first full IB World School and the only IB-continuum school in central Bangkok, on a Sukhumvit 15 campus near Asok BTS. Around 1,800 students from 93 nationalities, run as a parent-elected not-for-profit foundation. 2025 IB average 37 points, 100% pass rate, 56% Bilingual Diploma uptake.

The Bilingual Diploma figure is the most useful single EAL data point on NIST. Fifty-six per cent of graduates earned the Diploma in two academic languages, both at exam level. With no single nationality dominating, the EAL register sits inside a cohort built around language difference rather than a Thai bilingual majority. The central location pulls more first-language Korean, Japanese, Chinese and European arrivals than the suburban tier-one campuses see.

International School Bangkok

ISB is the American-curriculum benchmark in Thailand, on a large Nichada Thani campus in Nonthaburi. Around 2,000 students, full American pathway with IB Diploma and AP at high school. Class of 2025: 34-point IB average against a 30.58 global average, 34% Bilingual Diploma uptake.

ISB's EAL function sits inside an American special-education and language-services model, with specialist staff across elementary, middle and high school divisions. The school is large enough to staff EAL by age band rather than as a single team, which matters at secondary where a fourteen-year-old new arrival needs a different model from a seven-year-old. The practical caveat is location: Nichada Thani is well outside central Bangkok, and families typically live in or near the compound rather than commuting in.

Shrewsbury International School

Shrewsbury Riverside runs from a Charoenkrung Road campus on the Chao Phraya, with a separate City campus in Huai Khwang feeding the Riverside secondary. Around 1,800 students across both sites, English National Curriculum to A Level, *78% A/A at IGCSE and 56% A/A at A Level in 2024*, well above UK averages.

Shrewsbury's EAL profile is shaped by a higher Thai cohort share than NIST or ISB, and the EAL staffing follows from that large bilingual intake. The school is selective at secondary admissions, and the cohort it admits sits above the Bangkok median on English at intake. The recurring caveats on Shrewsbury, a high-pressure academic culture and a reported tutoring expectation outside school, sit outside the EAL function.

National-curriculum schools for language-community families

A share of Bangkok's non-Thai EAL demand sits with families who would rather their child stay in a national-curriculum school in the home language than enter an English-medium school with EAL support.

Lycée Français International de Bangkok

LFIB runs the full French national curriculum under AEFE accreditation, with the Brevet at Year 9 and Baccalauréat at Year 12. Around 1,030 students from 40-plus nationalities. The International British Section, launched in 2016 at primary and extended to secondary in 2020, gives families a route into IGCSEs and the new Baccalauréat français international. For a Francophone family the first language carries the curriculum; EAL becomes English-language acquisition inside a school whose academic spine remains in French. Fees sit notably below the English-medium internationals.

Korean International School of Bangkok

KISB operates under the Embassy of the Republic of Korea, serving Grades 1 to 12 almost entirely in Korean with English and Thai as additional languages. This is not an open-market international school. Enrolment is overwhelmingly Korean, the curriculum aligns with Korea's domestic system, and the typical family is preparing children to return to Korea or to apply to Korean universities. Fees sit around THB 268,000 to 314,000, well below the English-medium tier.

RIS Swiss Section, Deutschsprachige Schule Bangkok

The Swiss section at RIS is Thailand's only Swiss-German curriculum school, running bilingual German-English from age 2 through Grade 12. Founded 1963. Government-sponsored tuition subsidies make it more affordable than most Bangkok internationals for eligible families. The school welcomes families without prior German, which makes it credible for a Swiss-German posting where one parent speaks German and the other does not.

Schools built around multiple languages

A small group of Bangkok schools structure their whole programme around more than one language, which changes what EAL means in practice.

Concordian International School

Concordian is Thailand's only fully trilingual IB school, with English-Mandarin immersion through Early Years and Primary, an English-dominant shift from Grade 5, and Thai integration throughout. Around 1,000 students, full IB continuum. For a Mandarin-speaking family, the whole timetable assumes movement between three languages, which is the structural answer the English-medium tier cannot match.

KIS International School

KIS is one of the world's earliest IB Primary Years Programme schools, founded in 1998 in central Huai Khwang and running the full IB continuum with home-language support for Thai and Mandarin. Around 600 students at the original campus. Five-year IBDP average around 34.5 against a 30 global average. The smaller scale gives it a tighter community profile that parents cite as the reason new arrivals settle quickly. Recent ownership and leadership transitions, and the difficult opening of the Reignwood Park sister campus, are the live caveats on KIS as a broader school decision.

At a glance

What to watch for

A school comfortable with operational questions is a better EAL signal than any inclusion paragraph on a website.

EAL register numbers. The figure tells you the scale of provision and whether the school is genuinely accepting children with developing English or steering them away at assessment.

Staffing by division. A school of 1,500 with one EAL specialist across primary and secondary is not staffing the work seriously. Named specialists per division is.

The model used at the child's age. Pull-out only is a warning sign at secondary level. Push-in and embedded models combined with targeted pull-out is the stronger pattern.

The exit-criteria framework. WIDA, Cambridge English proficiency levels and CEFR are the established options; WIDA is the more common reference inside Bangkok's American-curriculum schools, CEFR inside the British and IB schools.

Separate EAL fees. Some Bangkok schools fold EAL into standard tuition; others charge a separate tier, annually or one-off. The fee schedule is the question to settle before assessment.

Mother-tongue exam access. Some exam boards allow first-language IGCSE and IB Diploma assessments. The Bilingual Diploma figures published by NIST and ISB reflect schools that route children through this option seriously.

Related reading

• Best international schools in Bangkok
• Best British schools in Bangkok
• Best IB schools in Bangkok
• Best schools for SEN and learning support in Bangkok
• Best bilingual schools in Bangkok

FAQs

Which Bangkok schools have the strongest EAL departments? Bangkok Patana, NIST, ISB and Shrewsbury anchor mainstream English-language support. Concordian and KIS sit alongside them for families wanting trilingual or home-language-integrated provision. LFIB, KISB and the Swiss section at RIS serve families staying inside a national curriculum.

Will my child be behind their peers because of the language gap? Temporarily, yes. A child entering an English-medium school with limited English will not perform at the same level as native speakers in year one. By year two the gap narrows; by year three most children operate at or near grade level. Younger children acquire faster.

My child speaks Thai and good conversational English. Do they still need EAL? Often, yes, particularly at secondary level. The Bangkok bilingual profile, strong spoken English with a developing academic register, is the most common EAL case in the city. Schools assess on academic English, not conversational fluency.

Is there a separate EAL fee at Bangkok schools? At some, yes; at others EAL is included in standard tuition. The amount and duration vary. Confirm at the admissions conversation, before assessment.

How long until my child is fully proficient in academic English? Social English typically arrives in 12 to 18 months. Academic English, the language needed at IGCSE and Diploma level, takes 5 to 7 years.

Can my child sit external exams in their mother tongue? Some exam boards allow first-language assessments at IGCSE and IB Diploma. The Diploma language A course in particular can be taken in the home language at most IB schools, which is the route NIST and ISB graduates use to earn the Bilingual Diploma.

Sources

• 2025 IB Diploma results published by Bangkok Patana, NIST, ISB and KIS.
• 2024 IGCSE and A Level results published by Shrewsbury International School Bangkok.
• CIS, NEASC, WASC, BSO and IB accreditation listings for Bangkok private schools.
• AEFE network listing for LFIB; Embassy of the Republic of Korea authorisation for KISB.
• Concordian and KIS published curriculum frameworks for trilingual and home-language programmes.

Figures correct as of June 2026. If a number, a date or a description on this page has changed, please tell us. Use the feedback button above or email us directly.