How to Choose an International Kindergarten in Bangkok: A Parent Guide for 2026-27

Choosing an international kindergarten in Bangkok is rarely a purely academic decision. You are choosing the place where your child will separate from you for the first time, make a first friend, and form a first opinion about whether school is somewhere they want to be.

It is also a decision made with very little comparable information. Two schools can both call themselves an international kindergarten in Bangkok, use the same photographs of happy students at water tables, and run programs that are structurally quite different. This guide is written to help you tell them apart. It covers the questions that actually distinguish one early years program from another, and where relevant it explains how the Early Years Program at BASIS International School Bangkok answers each one.

Start with the Age Bands, Not the Brochure

The single most common source of confusion for parents comparing international preschools in Thailand is vocabulary. Nursery, preschool, pre-kindergarten, kindergarten and reception are not standardised terms. They mean different things depending on whether a school follows an American, British or other curriculum, and sometimes they differ between two schools following the same system.

Before you compare curricula, fees or facilities, write down the exact age or birth-date range each school uses for each group. An American curriculum school is generally structured like this.

Stage	Typical age	What it leads into
Nursery	From around 2	Pre-Kindergarten
Pre-Kindergarten (PreK1, PreK2)	Roughly 3 to 5	Kindergarten
Kindergarten	Around 5 to 6	Grade 1
Grade 1	Around 6 to 7	Primary school

At BASIS International School Bangkok, the Early Years Program covers Nursery through Kindergarten, approximately ages two to six. Nursery starts from two years old, and Kindergarten covers ages five to six, the year immediately before students move into the Primary School Program.

Play-Based or Structured: The Choice That Actually Matters

Most early years programs sit somewhere on a line between two philosophies. At one end, learning is led by the student, and the adult follows their interests. At the other, learning follows a defined sequence, and the adult introduces skills in a deliberate order. Both approaches produce well-adjusted, capable students. Neither is automatically correct.

What matters is that the school knows which one it is doing and can explain the consequences. A strong play-based program should be able to describe how it notices and records what a student has learned. A strong structured program should be able to describe where play still lives in the day, because at this age it is not optional.

BASIS International School Bangkok sits deliberately toward the structured end. The Early Years curriculum is built around the Discovery Blocks of Learning, a thematic and content-rich sequence delivered in focused sessions of 25 to 30 minutes so that attention is matched to the age of the student. Subjects include English Language and Literacy, Math Discovery, STEM Discovery, World Discovery, Expressive Arts covering art, music and drama, Movement and Physical Education, Thai Language and Culture, and social and emotional development alongside self-care skills.

The school is equally direct about where that leads. By the end of the Early Years Program, BASIS students are able to perform math assignments at the Grade 1 level and to read and write at the beginning of the Grade 1 level. Whether that pace suits your child is a fair question to raise on a tour, and it is a far more useful conversation than comparing classroom decoration.

Class Size, and the Adults in the Room

Class size matters more in early years than at any later stage. A five year old who cannot yet ask for help in English needs an adult close enough to notice. When you compare schools, ask for the maximum class size rather than a stated average, because averages hide the largest classes.

Then ask a second question that fewer parents think to ask: how many adults are in the room, and what is each of them qualified to do. Two adults with different roles is a meaningfully different classroom from one teacher and one assistant who mainly manages materials.

At BASIS International School Bangkok, the published maximums are 15 students in Nursery and 20 students from PreK1 through Kindergarten. Every Early Years classroom is staffed by two qualified educators: an Early Education Teacher, an expatriate teacher with a background or degree in early education who delivers the curriculum, and an Early Education Teaching Fellow, a native Thai educator with a similar background who co-teaches and works specifically on accelerating English acquisition for students who are not native English speakers. Nursery, PreK1 and PreK2 classrooms also have Nannies supporting the two teachers. The full staffing detail is published on the school’s admissions FAQ page.

Language of Instruction, and What Bilingual Actually Means

Nearly every international kindergarten in Bangkok will tell you it teaches in English. The useful follow-up is what happens when a three year old arrives with no English at all, which is the situation for a large proportion of families in this city.

Immersion genuinely works at this age. Young students acquire a second language far more readily than older ones. But immersion without support can also mean a quiet, anxious term for a student who cannot yet say that they need the bathroom. Ask the school to describe, concretely, what support exists in the room on day one.

At BASIS International School Bangkok, English is the primary language of instruction, with bilingual educators available when needed, and the Thai-native Early Education Teaching Fellow in each classroom exists in large part for this reason. Thai is not treated as an optional extra either: Thai Language and Culture is part of the core curriculum for all students, regardless of nationality, a point the school sets out on its advantages page.

Facilities: Look for the Boring Things

Tours tend to showcase the visually impressive. For an early years student, the details that affect daily life are less photogenic: how far the classroom is from a bathroom, whether the youngest students have spaces of their own rather than shared spaces used at quieter times, and what the air is like indoors.

The BASIS International School Bangkok campus sits on 22 rai next to a 35 rai park and includes a dedicated Kindergarten Building and a separate Kindergarten learning pool, distinct from the 25 metre competition pool used by older students. Snacks and lunch are served daily in the Kindergarten Building, so the youngest students are not moving across campus to eat. Before and after-school care, transport and meal services are described on the student services page.

Air Quality Is an Early Years Question

Bangkok air quality declines each year between November and March, and typically peaks in January and February. This matters more for early years students than for any other group in a school. They breathe faster relative to their body size, their lungs are still developing, and they spend more of the day in active play than older students do.

Ask three specific questions on any tour during the dry season. What filtration is installed, and does it cover early years classrooms specifically. What air quality reading triggers a change to outdoor activity. And what replaces outdoor play when it is cancelled, because a policy that simply keeps students inside without an alternative is not a plan.

The BASIS International School Bangkok campus uses a Pre-cool Fresh Air system designed to protect students from PM2.5, described on the campus page.

Admissions: What to Expect and When to Start

Early years admissions in Bangkok run earlier than most families anticipate, and places in the youngest year groups are the most constrained because they are the main entry point into the school.

The admissions process at BASIS International School Bangkok involves an online application with a 5,000 THB application fee, teacher evaluation forms sent directly from your child’s current school, and a family meeting of about 30 minutes that includes an interview with your child. Applicants in Pre-K, Kindergarten and Grade 1 attend a play date rather than sitting an entrance exam, which is a far more appropriate way to meet a four year old. The steps do not have to be completed in a fixed order.

There are two application cycles, Early Admissions and Regular Admissions. Because seat capacity is not confirmed until current families complete re-enrolment, the majority of Regular Admissions offers are made in March and April. If you are aiming at an August start, begin visiting schools the previous autumn rather than in the new year.

Cost: The Questions That Change the Number

Tuition is the figure schools publish, and it is rarely the figure families actually pay in year one. Before you compare two schools on price, establish four things for each: the one-off entry costs and whether they are refundable, what tuition includes, what is billed separately, and how the fee changes as your child moves up the school.

BASIS International School Bangkok publishes its full fee schedule on the tuition and fees page, including the one-off application and registration fees, the refundable security deposit, and what is and is not covered by tuition. Comparing published schedules line by line is more revealing than comparing headline tuition, and any school that will not put its fee structure in writing before you apply is telling you something.

A Short Checklist for Your Campus Visit

1. Which exact ages sit in each class, and where does this group go next year?
2. What is the maximum class size, and how many adults are in the room?
3. What will my child be able to do by the end of this year?
4. What support exists for a student who arrives with no English?
5. Is Thai part of the core curriculum, or an optional extra?
6. Which spaces are used only by early years students?
7. What air filtration is installed, and what reading changes outdoor activity?
8. What is the total first-year cost, including one-off fees, and which parts are refundable?
9. When are admissions decisions made, and what is the intake calendar?
10. May I see a normal day, rather than an event day?

The last one is the most useful. Any school can stage an open day. Ask to observe an ordinary Tuesday morning, and watch how adults speak to students when nothing is being demonstrated.

Early Years at BASIS International School Bangkok

BASIS International School Bangkok opened in August 2019 and is the 35th school in the BASIS Curriculum School network. All BASIS Curriculum Schools are accredited by Cognia, formerly AdvancED, under the North Central Association Commission on Accreditation and School Improvement and the Southern Association of Colleges and Schools Council on Accreditation and School Improvement.

The Early Years Program runs from Nursery through Kindergarten on the Rama 2 campus, using the Discovery Blocks of Learning curriculum, two qualified educators in every classroom, and a social and emotional learning curriculum that begins in Kindergarten and is taught as part of the school day. Families who want the wider picture of how the years fit together can read our overview of the BASIS education levels and curriculum, our guide to choosing an international school for the early years, and our practical notes on preparing your child for international primary school.

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Frequently Asked Questions

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References

• BASIS International School Bangkok, Early Years Program. Program structure, Discovery Blocks of Learning, age bands and co-teaching model.
• BASIS International School Bangkok, Admissions FAQs. Published class size maximums and the Early Years staffing model.
• BASIS International School Bangkok, Admissions Process. Application steps, fees, play date and family meeting, admissions cycles.
• World Health Organization, Air pollution and child health: prescribing clean air. Why young students are more vulnerable to particulate air pollution than adults.
• Pollution Control Department, Thailand Air Quality Index. Official Thai national air quality monitoring network and index.