American (Mastery Learning) + Advanced Placement · Kathu (between Phuket Town and Patong)
QSI International School of Phuket, at 81/4 Moo 1, Chalermprakiat Ror 9 Road, Kathu, was founded in August 2000 as part of the non-profit Quality Schools International network. It delivers an American-style, mastery-based curriculum — students progress as they demonstrate understanding rather than by fixed pacing, and are grouped by ability across multi-age classes — from pre-school through elementary and secondary, with Advanced Placement (AP) courses in the senior years. QSI is one of Phuket's smaller, community-scale international schools and is the island's established choice for families who want a US pathway.
Address: 81/4 Moo 1, Chalermprakiat Ror 9 Road, Kathu, Phuket
A compact, community-scale campus in Kathu — small by Phuket standards, which is the point: QSI's model depends on close teacher-to-student contact and ability grouping rather than a large estate.
Getting there: No rail on the island. Kathu sits in the middle of Phuket between Phuket Town and Patong, so it is one of the more forgiving locations for a two-directional family — roughly 15 minutes to either off-peak. The caveat is the Patong hill road, which is steep, slow in rain and the reason many Patong-based families still allow far more time than the distance suggests.
Phuket has no rail network of any kind — no BTS, no MRT, no commuter line. The island's long-discussed light rail scheme is still in study and procurement, so every school run here is a car, a motorbike or the school bus. Read the Phuket getting-around guide and the Phuket area guides before you commit to a beach.
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 QSI International School of Phuket and its accrediting bodies publish, not our verdict:
Boarding: Day school — no boarding.
Scale: One of Phuket's smaller international communities. QSI publishes its own annual school profile with current enrolment; we do not restate a roll figure that moves every year. 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.
American and other families who want a US high-school transcript and AP courses rather than IGCSE or IB, families whose child benefits from mastery pacing rather than a fixed year group, and anyone wanting a mid-island base that works for both Patong and Phuket Town.
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.
Kathu's catchment is the island's middle — town on one side, Patong over the hill on the other:
Check the school's bus catchment before you sign. Phuket is a big island served by one congested north–south spine and a handful of hill roads — a villa that looks close on a map can sit outside the route, and a home on the route can be further away and still be the easier morning.
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 QSI International School of Phuket website →
BAANLYY does not rank, endorse or accept payment from schools. Facts on this page are compiled from QSI International School of Phuket'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 beach or a town to the bus route and your budget, and line up healthcare and your visa.