Bangkok International School Admissions Guide

Most international schools in Bangkok run an August-to-June academic year, while Thai state and many Thai private schools run a different calendar entirely, and that single mismatch catches more relocating families out than any other part of the process. Arrive mid-year expecting an easy start, and you will usually meet either a gap before the next intake or a mid-year entry into whatever places happen to be free. This guide works through the calendar, the admissions sequence, the paperwork, and the visa structure in the order a family actually meets them.

The academic year, and why it catches families out

International schools in Bangkok typically run three terms from mid-August to late June, mirroring the British and American academic calendars, with the main admissions intake at the start of that year in August and a smaller second intake in January. Thai government and Thai private (non-international) schools run on a different structure, generally starting in May, which means a family relocating on a corporate timetable set around a Western financial or calendar year can easily land between intakes at their target international school.

A family arriving outside the August or January windows faces a genuine choice: hold the child out of formal schooling for a period, accept a mid-year place if one is available (more likely at a less oversubscribed school or in a less popular year group), or consider a bilingual or Thai school with a different intake structure. None of these is automatically wrong, but each has consequences worth working through with the receiving school before committing to a relocation date, rather than after.

The admissions sequence

1. Enquiry and tour. Initial contact, usually online, followed by a campus tour: book this well ahead for popular schools and year groups, since tour slots themselves can be limited in peak season.
2. Application and fee. A formal application form plus a non-refundable application fee, generally payable before the assessment is scheduled.
3. Assessment. Content and format vary sharply by age. Early years and lower primary typically involve a play-based or observational session rather than a formal test. Upper primary and secondary applicants usually sit written English and mathematics assessments, plus a reasoning test at many schools, and an interview, with the student, the parents, or both, depending on the school and the child’s age.
4. Reports and references. Schools request recent report cards and, often, a confidential reference from the child’s current or most recent school, sometimes including a specific form the current school completes.
5. Offer and deposit. A successful application results in a formal offer, usually accompanied by a deposit required to secure the place. See below on what that deposit does and does not guarantee.
6. Waiting list. For oversubscribed year groups, especially at popular schools, an unsuccessful or provisional application can be placed on a waiting list rather than rejected outright, with movement depending on other families withdrawing or the school opening extra capacity.

A waiting-list position is rarely numbered or transparent in practice: schools generally will not confirm exactly where a child sits on the list, since position can shift as other families’ circumstances change, siblings are prioritised, or a school adjusts class numbers slightly. Ask instead how many places typically open in that year group between now and the start date, based on past years, and whether the school will proactively update the family or expects them to check in periodically: the answer says as much about the school’s communication culture as the number itself.

Where the bottlenecks actually are

Not every year group is equally hard to enter. The tightest points are typically:

• The most popular top-tier schools, where lead times of a year or more before the target start date are common for the most sought-after year groups, particularly the entry points into early years/reception and into the first year of secondary.
• Specific year groups within an otherwise open school: a school with plenty of general capacity can still be full in one particular year, especially where a cohort is unusually large or has few students leaving.
• Siblings needing the same year group at the same time, or entering different year groups where one has capacity and the other does not: schools vary in how much they prioritise keeping siblings together, and this is worth asking about explicitly rather than assuming.
• Mid-year arrivals into any popular school, since places freed by a family leaving mid-year are rarer and less predictable than the natural turnover at the start of the academic year.

The practical implication: start the admissions process for a top-tier or popular school roughly a year ahead of the target start date wherever the relocation timeline allows it, and treat “no places” at one school as a normal outcome to plan around rather than a sign something has gone wrong. For a single-school example, see the Bangkok Prep International School guide.

Assessment preparation: what helps and what does not

For younger children, the honest answer is that formal preparation for a play-based assessment does little; schools are observing how a child interacts, follows simple instructions and engages with materials, not testing acquired knowledge. For older children sitting written English, maths and reasoning assessments, genuinely useful preparation is unremarkable: familiarity with the format of a written test, a calm and rested test day, and, where the family’s own schooling history has gaps, some straightforward review of core maths and English at the right level. What does not help, and can backfire, is heavy last-minute drilling aimed at a specific school’s known test style, or presenting a child as more advanced than their actual working level, since a mismatch surfaces quickly once term starts and the child is placed by ability regardless of the assessment score alone.

EAL assessment for a child with limited English follows a different logic: schools assess current English level specifically to plan support, not to filter the child out, and a lower score here should prompt a direct conversation about the school’s EAL provision and capacity (covered in the main schools guide) rather than being treated as a pass-or-fail result.

Paperwork: what schools generally ask for

Requirements vary by school, but commonly include:

• Child’s passport (and the sponsoring parent’s passport)
• Current or planned visa status for the child and the accompanying parent(s)
• Birth certificate, sometimes with certified translation and legalisation if not in English
• Immunisation records
• Previous school reports for at least the last one to two years
• A reference or transfer form from the current school
• For students with additional needs, any existing educational or psychological assessment reports

Documents not already in English or Thai typically need certified translation, and some (particularly birth certificates for visa purposes) may need legalisation through the issuing country’s foreign ministry and the Thai embassy or consulate there. Start this paperwork early: legalisation and certified translation can each take weeks, and schools generally will not finalise an offer without the core documents in hand.

Keep a single folder, physical or digital, with a copy of every document once gathered, since the same set is often needed again for the visa application, for a second child’s application, or for the following year’s renewal paperwork. Families who scatter these documents across the relocation process tend to re-request the same items from a previous school or a government office more than once, which is avoidable friction at a point when time is usually already tight.

The visa angle: structure only, verify before relying on it

This section is general information, not legal advice, and Thai immigration rules change. Verify current requirements directly with the school, the Thai Immigration Bureau, or a Thai embassy or consulate before making any visa or relocation decision.

In outline, a foreign child attending a Thai-registered school (international or otherwise) generally needs a Non-Immigrant “ED” visa, sponsored by the school, which the school’s admissions or visa office typically helps arrange once a place is confirmed. A parent who is not otherwise in Thailand on a separate visa (such as a work permit tied to their own employment) can, in some circumstances, apply for a Non-Immigrant “O” visa as the dependant or guardian of a child on a student visa; this route carries its own financial and documentary requirements set by Thai immigration, is generally limited to a defined number of guardian visas per student visa, and needs to be checked directly with Immigration or a qualified adviser rather than assumed from general guidance. A parent already working in Thailand on their own visa and work permit usually sponsors the child as a dependant through that route instead, which is a different process again. Because the details (required documents, financial thresholds, renewal timing) are exactly the kind of thing that changes, treat this paragraph as a map of the moving parts, not a checklist to execute without confirmation.

Fees and payment timing

Application fees are due at application. Deposits are typically due on accepting an offer, ahead of the start of term. Tuition itself is usually billed termly or annually, with many schools requiring the first term or the full year paid before the start date, particularly for a new family with no payment history at the school. Budget for the capital or development levy and the first year’s uniform and equipment costs as separate, additional cash-flow events on top of tuition: see the main schools guide for the full breakdown of fee categories. If an employer education allowance is involved, confirm exactly when and how it is paid (directly to the school, or reimbursed to the parent) before the first invoice is due, since a reimbursement model can create a real cash-flow gap at the start of the year.

What a deposit actually secures, and when it comes back

A deposit generally secures a specific place in a specific year group for a specific start date, not a permanent hold, and not automatically transferable if the family’s plans change. Refund policies vary widely: some schools deduct the deposit from the first term’s tuition once the child starts (making it, in effect, an advance payment rather than a separate cost); others treat it as non-refundable if the family withdraws before the start date, particularly if the withdrawal comes late enough that the place could not be reoffered. Get the specific refund terms in writing before paying, especially if the relocation itself is not yet fully confirmed.

Scholarships and bursaries

A number of Bangkok international schools offer scholarships or bursaries as a category (academic, sport, or need-based) though availability, criteria and value vary enormously by school and are not standard across the sector. Where they exist, they typically require a separate application, sometimes a separate assessment or audition, and are usually far more limited in number than the general applicant pool. Ask directly whether a shortlisted school offers anything in this category, what it covers (a fee percentage, a fixed amount, or a full waiver), and how it is renewed or reviewed year to year, since a scholarship awarded on entry is not always guaranteed to continue automatically through the whole time a child is at the school.

Moving a child mid-year

A mid-year move is sometimes unavoidable given a relocation’s own timing, and it is more common, and generally handled more smoothly, than families expect: schools that run a January intake are set up for it, and even schools without a formal second intake will often take a mid-year arrival into a year group with spare capacity. The main considerations: a mid-year arrival narrows the choice of available schools to those with actual space in that specific year group right now, a child arriving mid-year misses whatever content or social bonding happened in the preceding months, and (as covered in the curriculum comparison) a mid-year move during the final two years of A-levels or the IB Diploma is genuinely difficult and worth avoiding if the relocation timeline allows any flexibility at all.

The first term: settling in

The practical items that shape how smoothly a first term goes: confirming the bus route and pickup point (or the realistic drive time, per the geography discussion in the main schools guide) before term starts rather than during the first week; ordering uniform early, since sizing and stock can run short right before the August intake; and asking the school directly what settling-in support it offers a new arrival: a buddy system, a induction period, or simply a named point of contact for the first few weeks. Most schools have done this many times before and have a structured process; a family’s job is mainly to ask for it explicitly rather than assume it will happen informally.

Working backwards from a target start date

Compress this timeline where the relocation itself does not allow a year of lead time, but expect fewer choices and more waiting-list exposure the shorter the window becomes, especially for popular schools and year groups.

Common questions

What is the school year in Bangkok international schools?

Most run mid-August to late June in three terms, with the main intake in August and a smaller intake in January. This differs from the Thai state-school calendar, which generally starts in May, so a family relocating on a calendar-year corporate timeline should check the target school’s actual intake dates well ahead of moving.

How far in advance should we apply?

For the most sought-after schools and year groups, a year or more of lead time gives the best chance of a place in the target year group; less popular schools or less contested year groups can sometimes be arranged in a few months. Start the process as soon as a relocation date is reasonably firm rather than waiting for full certainty.

Does my child need a visa to attend school in Thailand?

In general, yes: a foreign child attending a Thai-registered school typically needs a student (ED) visa, usually arranged with the school’s help once a place is confirmed, and an accompanying parent may need a separate dependant or guardian visa. Rules and financial requirements change, so verify the current position with the school, the Thai Immigration Bureau, or an embassy before finalising relocation plans; this is general information, not legal advice.

Is a school deposit refundable?

It depends entirely on the school’s own policy: some deduct it from the first term’s tuition once the child enrols, others treat it as non-refundable if the family withdraws, particularly close to the start date. Get the specific terms in writing before paying rather than assuming either outcome.

What if we arrive mid-year?

Many schools can accommodate a mid-year arrival, especially those with a formal January intake or spare capacity in a specific year group, though choice narrows to schools with actual space at that moment. Avoid a mid-year move during the final two years of A-levels or the IB Diploma if the relocation timeline allows any flexibility, since those transitions are the hardest to make cleanly.

Are scholarships available at Bangkok international schools?

Some schools offer academic, sport or need-based scholarships and bursaries, but availability and value vary widely and are never guaranteed across the sector. Ask each shortlisted school directly what it offers, what it covers, and how renewal works from year to year.