Mill Hill International School, Chiang Mai
Key Stats
Annual Fees: Contact school
Curriculum: British
Age Range: 3-11
Students: ~150
Location: Other Chiang Mai, Chiang Mai
Updated April 2026
In Brief
If you have a child under 11 and you live or work on the western side of Chiang Mai near the Ornsirin developments, Mill Hill is worth a visit - UK name, British prep school ethos, small founding cohort. For families who need secondary continuity past age 11, the school is not there yet.
Mill Hill opened in September 2025 as a pre-prep and prep school on the Ornsirin development site on Chiang Mai's western edge, under the Mill Hill Education Group brand - the same group that runs Mill Hill School in north London. Founding head Ms Kate Simon, previously at Grimsdell Pre-Prep in the UK, leads around 150 students aged 3-11. It is the newest British prep school in northern Thailand and the only one with a named UK partnership at this level.
The school is genuinely in its first year. No external review data exists, no IGCSE or A-Level track record has been established, and the community is a small founding cohort still finding its shape. Families who joined at opening describe a warm, attentive environment where their child is known individually - standard for any small new school, but worth verifying is sustained as numbers grow.
Two practical issues are worth raising before committing. First, the Ornsirin location sits west of the city - further from Nimman and the Old City than Hang Dong schools, meaning commutes from central Chiang Mai are meaningful. Second, there is no secondary pathway yet. Families with a child in Year 3 or above will need to plan for a school move at age 11; ask what the school's own thinking is on a secondary programme and whether a timeline exists.
What parents value
- –The only British prep school in Chiang Mai with a named UK school group partnership. Mill Hill Education Group has a reputation for academic rigour in the UK; the brand carries weight with families relocating from British schooling environments.
- –Small founding cohort means high teacher-to-student ratios and genuine individual attention in the early years. Children joining at this stage will have first-mover advantage in a school still forming its culture.
- –Primary-only focus means the teaching team is specialist in early years and prep school education. If you have a child under 11 who thrives in a smaller, more structured British prep environment, this is worth exploring.
Points of consideration
- –No secondary pathway exists past Year 6 (age 11). Families with older children or those planning to stay in Chiang Mai long-term will need to factor in a school transition at Year 7. Ask the school directly about secondary plans.
- –Fees are not published. The Mill Hill brand typically commands mid-to-premium pricing; contact the school directly to understand the full cost including one-time fees before comparing against Lanna or Panyaden.
- –The Ornsirin location is on the western outskirts - further from central Chiang Mai than most Hang Dong schools. Families based in Nimman, the Old City or near the airport should map the commute against peak traffic times before shortlisting.
Annual Fees
| Year Group | Age | USDTotal Annual Fee |
|---|---|---|
| All grades | 3-11 | 0 |
Fees converted from THB. For the most up to date and accurate figures please double check with the school.
Academic Results
Academic results have not been made publicly available by this school.
Extra Curriculars
Contact the school for details on co-curricular activities and facilities. Ask what a normal week looks like outside lessons for your child's interests.
Inspections & Accreditations
Inspection
No published inspection details are currently available.
Accreditations
Accreditation details are not publicly listed.
Memberships
Membership details are not publicly listed.
Student Body
Chiang Mai's international schools serve a mix of long-term resident families, digital nomad households, and children of NGO and business professionals. Contact the school for current enrolment details.
Leadership
School leadership
Contact the school for details.