American — US standards-based curriculum with Advanced Placement (AP) · San Phi Sua, on the Second Ring Road, a few kilometres north-east of central Chiang Mai
Nakornpayap International School (NIS) was founded in 1993 and is Chiang Mai's oldest secular international school — a distinction that matters in a city where several of the long-established international schools are faith-based. NIS teaches a United States standards-based curriculum adapted for the cultural and language needs of an international student body in Southeast Asia, with Advanced Placement courses available in the senior years. The school occupies a leafy 17-acre campus at 240 Moo 6, San Phi Sua, on Chiang Mai's Second Ring Road just north-east of the city centre, and was first accredited by the Western Association of Schools and Colleges in 2001.
Address: 240 Moo 6, San Phi Sua, Mueang, Chiang Mai (Second Ring Road)
A leafy 17-acre suburban campus with science and computer laboratories, art and music rooms, a gymnasium, a swimming pool and a full-size football pitch — a conventional, well-equipped suburban school site rather than a rural estate.
Getting there: No urban rail, but NIS is one of the easier runs in the city: the campus sits directly on the Second Ring Road in San Phi Sua, a few kilometres north-east of the centre, which makes it quick from the northern and eastern suburbs and avoids the Old City's one-way system entirely. Expect 15–25 minutes from most of the city core, longer from Hang Dong or Saraphi in the south.
Chiang Mai has no urban rail — no BTS, no MRT, no commuter metro. The city's railway station serves intercity trains to Bangkok, and the long-discussed Chiang Mai light-rail scheme remains unbuilt, so every school run here is a car, a motorbike, a red songthaew, a Grab or the school bus. Read the Chiang Mai getting-around guide and the Chiang Mai area guides before you commit to a neighbourhood.
NIS hosts a public IQAir air-quality monitoring station that reports the campus reading publicly, so parents can see the outdoor number at the school rather than a citywide average — genuinely useful during the burning season. Note carefully what this does and does not tell you: a public outdoor monitor is not the same as filtered classrooms, and NIS does not publish the building-by-building filtration detail that Prem and Panyaden do. Ask admissions directly about indoor provision.
Northern Thailand's burning season runs roughly February to April, when agricultural burning and forest fires push Chiang Mai high into the global air-quality rankings — IQAir placed the city among the ten most polluted in the world on 4 March 2026, with AQI above 150 and PM2.5 the dominant pollutant. For a family with young children this is a legitimate school-selection criterion, not a footnote. Our Chiang Mai air-quality guide covers the season in full.
How a child progresses through the school, stage by stage:
Accreditation is the closest thing to an objective quality signal in international schooling — it means an outside body has inspected governance, teaching and safeguarding. BAANLYY does not rank schools, so this is what Nakornpayap International School (NIS) and its accrediting bodies publish, not our verdict:
Boarding: A day school — NIS does not operate boarding.
Scale: One of the larger international schools in the city, with a roll of roughly 600-plus students reported across the age range, and a secular, mixed international and Thai-international community. Roll and nationality figures move every year and schools report them differently — treat these as indicative and ask the admissions office for the current numbers.
Families who want an American curriculum and AP pathway without a faith-based framing — in Chiang Mai that combination narrows the field quickly, and NIS is the longest-established secular option. The ring-road position suits families living north and east of the centre.
This is our editorial read for relocation planning, not a ranking or a recommendation — and no school pays to appear on BAANLYY. Visit shortlisted campuses before you decide.
The northern and eastern suburbs put you on the right side of the ring road. The BAANLYY area guides for this run:
Check the school's bus catchment before you sign. Chiang Mai's international schools cluster in two distinct belts — the northern one around Mae Rim and San Sai, and the far larger southern one through Hang Dong, Mae Hia and Saraphi — and picking a home in the wrong belt turns a fifteen-minute run into a daily hour.
BAANLYY deliberately does not publish per-school tuition figures: they change annually, schools publish their own current schedules, and a stale number is worse than none. Take this list to the admissions office:
Visit the official Nakornpayap International School (NIS) website →
BAANLYY does not rank, endorse or accept payment from schools. Facts on this page are compiled from Nakornpayap International School (NIS)'s own official website and its accrediting bodies, and are provided for relocation planning — not as admissions or financial advice. Curricula, campuses, fees and admissions rules change; always confirm current details with the 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 neighbourhood to the bus route and your budget, and line up healthcare and your visa.