St. Andrews
International School Green Valley
2025 - 2026 Birthday Range
Age (in 2023-24)
St. Andrews/UK Year Group
Thai Equivalent Year Group
USA Equivalent Grade
31 Aug 22—30 Aug 23
2-3
Nursery
Tream - Anubaan
Pre-Kindergarten
31 Aug 21—30 Aug 22
3-4
Kindergarten
Anubaan 1
Pre-Kindergarten
31 Aug 20—30 Aug 21
4-5
Reception
Anubaan 2
Pre-Kindergarten
Primary School
31 Aug 19—30 Aug 20
5-6
Year 1
Anubaan 3
Kindergarten
(Key Stage One)
31 Aug 18—30 Aug 19
6-7
Year 2
Pratom 1
Grade 1
31 Aug 17—30 Aug 18
7-8
Year 3
Pratom 2
Grade 2
Primary School
31 Aug 16—30 Aug 17
8-9
Year 4
Pratom 3
Grade 3
(Key Stage Two)
31 Aug 15—30 Aug 16
9-10
Year 5
Pratom 4
Grade 4
31 Aug 14—30 Aug 15
10-11
Year 6
Pratom 5
Grade 5
31 Aug 13—30 Aug 14
11-12
Year 7
Pratom 6
Grade 6
31 Aug 12—30 Aug 13
12-13
Year 8
Matayom 1
Grade 7
31 Aug 11—30 Aug 12
13-14
Year 9
Matayom 2
Grade 8
Secondary School
31 Aug 10—30 Aug 11
14-15
Year 10
Matayom 3
Grade 9
(Key Stage Four– IGCSE)
31 Aug 09—30 Aug 10
15-16
Year 11
Matayom 4
Grade 10
Sixth Form
31 Aug 08—30 Aug 09
16-17
Year 12
Matayom 5
Grade 11
(International Baccalaureate (IB) Diploma)
31 Aug 07—30 Aug 08
17-18
Year 13
Matayom 6
Grade 12
Early Years
Secondary School (Key Stage Three)