Thailand's northernmost gateway city has a much smaller international-school field than Chiang Mai, three hours south — three real options, what tuition costs, how the curricula differ, and where to live for the shortest school run. Fees are 2026 guide ranges in Thai baht (≈ THB 35–36 = USD 1).
Chiang Rai's international schooling is real but genuinely limited compared with Chiang Mai: three schools cover the ground — Chiang Rai International School (CRIS) in Rimkok north of the centre (American-style, Kindergarten to Grade 12, day and boarding), Chiang Rai International Christian School (CRICS) in Ban Du (American curriculum with a Christian ethos, Kindergarten to Grade 12), and Oasis Himalayan International School (OHIS), a newer American-curriculum school currently covering early years through elementary and actively expanding into secondary. All three sit well below Chiang Mai or Bangkok international-school pricing. Below: the schools, typical tuition, where to base yourself, and how the curricula and grade coverage differ. For day-to-day budgeting pair this with the Chiang Rai cost-of-living guide, and use the Chiang Rai hub to match a neighbourhood to your school.
Chiang Rai's three international schools, each serving a different niche. This is a starting point, not a ranking — the right fit depends on curriculum, budget, grade level and how far each school's programme currently extends.
| School | Area | Curriculum | Known for |
|---|---|---|---|
| Chiang Rai International School (CRIS) | Rimkok sub-district, roughly 3km north of the city centre | American-style — Common Core (English & Maths), NGSS Science, AERO Social Studies | Established in 2010, CRIS was the first international school in Chiang Rai and remains the only one offering both day and boarding places, on an 11-rai (4.5-hectare) purpose-built campus in the semi-rural Rimkok area. It runs a full Kindergarten-to-Grade-12 pathway for ages 5-18, making it the only school here that covers a child's entire schooling without a switch. Boarding is a practical option for families based elsewhere in the North, or anywhere in the region, who want an international K-12 campus without relocating full-time. |
| Chiang Rai International Christian School (CRICS) | Ban Du, Muang district, a short drive from the city centre | American, Christian ethos — all subjects taught in English except Thai language | Operating since 1998, CRICS is Chiang Rai's longest-running international school, delivering an American curriculum within an explicitly Christian community and ethos, from Kindergarten through Grade 12. Tuition is deliberately flat across every grade level rather than rising by year, and the school runs its own financial-aid and multi-child discount programmes — worth asking about directly if cost is a factor. Ban Du is also covered as a lower-rent, outlying pocket in our Chiang Rai areas guide. |
| Oasis Himalayan International School (OHIS) | Chiang Rai city (exact campus location not independently confirmed — verify directly) | American — Common Core-based, taught in English by native-speaking teachers | The newest and smallest of Chiang Rai's three international schools, OHIS currently serves children from roughly age 3 through elementary grades. It is actively expanding: a Grade 8 middle-school class was set to open in August 2026, with a high-school programme planned to follow from 2027. That makes it a genuine option for younger children today, but families need a Grade 7+ plan (CRIS, CRICS, or relocating) until its secondary offering is fully built out — confirm current grade coverage directly with the school before enrolling. |
Indicative annual fees for 2025/26. Both CRIS and CRICS bill tuition separately from one-time application, entrance or enrolment fees, and from lunch, transport, uniforms and activity fees — budget for these on top of the headline tuition figure below.
| Stage | Annual fee (guide) |
|---|---|
| CRIS — Kindergarten | THB ~128,400 / year |
| CRIS — Grades 1–3 | THB ~166,800 / year |
| CRIS — Grades 4–6 | THB ~192,600 / year |
| CRIS — Grades 7–9 | THB ~217,400 / year |
| CRIS — Grades 10–12 | THB ~241,200 / year |
| CRIS — application fee + entrance/enrolment fee | THB 5,000 + THB 50,000 |
| CRICS — all grades, Kindergarten–Grade 12 (flat rate) | THB ~160,000 / year |
| CRICS — new-student registration + capital fee | THB 25,000 + THB 32,000 |
| CRICS — returning-student re-enrolment deposit + development fee | THB 25,000 + THB 32,000 |
| OHIS — early years & primary (confirm current schedule) | Not publicly listed — request directly |
CRICS's flat per-grade fee makes multi-year budgeting simple, while CRIS's fee rises by stage in the more conventional way. Both sit well below equivalent Bangkok, Phuket or even Chiang Mai international-school tuition. Always request the current fee schedule directly from the school before you commit.
Chiang Rai's school geography splits into two practical clusters, with the City Centre working as a compromise base for any of the three:
| Area | Nearest schools | Why families live there |
|---|---|---|
| Rim Kok (Rimkok, north of the centre) | Chiang Rai International School (CRIS) | A quieter, greener riverside setting along the Kok River, already popular with longer-term residents per our Chiang Rai areas guide, and the shortest run to CRIS. A natural base for boarding-adjacent or day-school families who want space over walkability. |
| City Centre (clock tower & night bazaar) | Commutable to all three; no campus on-site | Chiang Rai's widest rental choice, walkable restaurants and services, with a manageable drive to CRICS in Ban Du, CRIS in Rim Kok, or OHIS — the default base for most relocating families regardless of which school they choose. |
| Ban Du and other outlying pockets | Chiang Rai International Christian School (CRICS) | Lower rent and more space in exchange for a short drive into town — the practical choice for CRICS families, or anyone prioritising value over central-location convenience. |
All three of Chiang Rai's international schools teach an American-style curriculum, but they are not interchangeable. CRIS follows Common Core standards for English and Maths, Next Generation Science Standards (NGSS) for science, and AERO standards for social studies, across a complete Kindergarten-to-Grade-12 pathway with boarding available — the only school here that can take a child from Early Years through to graduation without a switch. CRICS runs a similar American, Common-Core-rooted curriculum within an explicitly Christian school community and ethos, also Kindergarten through Grade 12. OHIS teaches a Common Core-based American curriculum but, as the newest of the three, currently only covers early years through elementary grades — its middle school (Grade 8) was set to open in August 2026, with high school planned from 2027, so families enrolling now need a plan for the years the school doesn't yet cover. If you need a single school for a child's entire K-12 journey today, CRIS or CRICS are the two proven options; if your children are young and you're comfortable reviewing OHIS's grade coverage again as your child approaches Grade 7, it's worth a look for its smaller size and community feel.
With only three schools in play, start conversations six to twelve months ahead of the intake you want, particularly for CRIS's boarding places. Expect an assessment or placement check, recent school reports and a family interview at all three. Gather transcripts, immunisation records and references before you leave your home country, and confirm whether an employer relocation package covers tuition and the one-time entrance or enrolment fee. If you're considering OHIS, ask directly about current grade coverage and the confirmed timeline for its middle- and high-school build-out before enrolling a child who will need those years. Families on a tighter budget, or planning a shorter stay, should also look at local Thai and bilingual private schools, and weigh Chiang Mai — three hours south, with a far larger international-school scene — if school variety matters more than Chiang Rai's lower cost of living and quieter pace. Once a school is confirmed, choose your home around its location — Rim Kok for CRIS, Ban Du for CRICS, or the City Centre as a compromise base.
Chiang Rai has three international schools: Chiang Rai International School (CRIS, American-style curriculum, Kindergarten through Grade 12, day and boarding, in Rimkok north of the city), Chiang Rai International Christian School (CRICS, American curriculum with a Christian ethos, Kindergarten through Grade 12, in Ban Du), and Oasis Himalayan International School (OHIS, American curriculum, currently early years through elementary and actively expanding into middle and high school). This is a far smaller field than Chiang Mai, three hours south, so confirm placement and grade coverage early.
As a 2026 planning range: CRIS runs from about THB 128,400 a year at Kindergarten up to roughly THB 241,200 in Grades 10-12, plus a one-time THB 5,000 application fee and THB 50,000 entrance/enrolment fee. CRICS charges a flat rate of roughly THB 160,000 a year across every grade, Kindergarten through Grade 12, plus new-student registration and capital fees of about THB 25,000 and THB 32,000. OHIS does not publish a public fee schedule for its early-years and primary programme — request current pricing directly. All figures exclude lunch, transport, uniforms and activity fees.
Yes — Chiang Rai International School (CRIS) is the only one of the city's three international schools offering boarding alongside day places, on its purpose-built campus in Rimkok. That makes it a practical option for families based elsewhere in northern Thailand, or the wider region, who want a K-12 international campus without relocating to Chiang Rai full-time.
Rim Kok, along the Kok River north of the centre, gives the shortest run to CRIS and is already a popular residential pocket. Ban Du, an outlying, lower-rent area, sits closest to CRICS. Most relocating families still default to the City Centre around the clock tower and night bazaar for the widest rental choice and restaurants, accepting a short daily drive to whichever school they choose — see our Chiang Rai areas guide for the full neighbourhood breakdown.
If a wide choice of curricula, class sizes, extracurriculars and a larger expat peer group for your children matters most, Chiang Mai — about three hours south, with a far bigger and more established international-school scene — is usually the stronger base. Chiang Rai works well for families who have already chosen CRIS, CRICS or OHIS specifically, want a smaller and quieter community, or are prioritising lower living costs and Golden Triangle access over school variety. Some families based in Chiang Rai use CRIS's boarding option as a middle path.
This guide is general information for relocation planning, not admissions or financial advice. School fees, curricula, campus locations, grade coverage and admissions rules change — confirm current details directly with each school.
Primary and official sources are cited above. Government rules, fees and procedures in Thailand change over time and vary by office; always confirm current requirements with the relevant authority before relying on them. BAANLYY never takes paid placement in editorial content.
School shortlisted — now match a family-friendly area near the city centre and line up healthcare and your visa.
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