Term dates

UDIS operates three terms per school. Dates are as follows:

2025/2026 Academic Year

Term 1

School start: Wednesday 13 August, 2025
Half term break: 11-20 October, 2025
Finish: Friday 19 December, 2025

Term 2

Start: Tuesday 13 January, 2026
Half term break: 20 February, 2026
Finish: Friday 3 April, 2026

Term 3

Start: Monday 20 April, 2026
Finish: Friday 19 June, 2026

Conference dates

T1 Conference day Tuesday 16 December 2025 (Last week of school)
EOY Conference day #2 Tuesday 16 June 2026 (Last week of school)

Public holidays

King’s Birthday Monday 28 July, 2025
Mother’s Day (special holiday) Monday 11 August 2025
Mother’s Day Tuesday 12 August 2025
King Bhumibol Memorial Day Monday 13 October, 2025
Chulalongkorn Day Thursday 23 October, 2025
King Rama IX Birthday Friday 5 December, 2025
Special holiday day Monday 2 March, 2026
Makha Bucha Day Tuesday 3 March, 2026
Labour Day Friday 1 May, 2026
Visakha Bucha Day Monday 1 June, 2026
Special holiday day Tuesday 2 June, 2026
Queen Suthida’s Birthday Wednesday 3 June, 2026

Payment dates

Term 1 due date Friday 25 July, 2025
Term 2 due date Friday 21 November, 2025
Term 3 due date Friday 6 March, 2026

2026/2027 Academic Year

Term 1

School start: Monday 10 August, 2026

Google Calendar

You can also find all our school events on our Google Calendar which can be found in the previous link.

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