BIS Age Guidelines 2025-2026
| Grade Level | Date of Birth | age | Thai system | American system |
|---|---|---|---|---|
| Early Year 1 | 1 Sep 2022 - 31 Aug 2023 | 2 - 3 years | Preparing for kindergarten | Pre-K |
| Early Year 2 | 1 Sep 2021 - 31 Aug 2022 | 3 - 4 years | Kindergarten 1 | Kindergarten 1 |
| Early Year 3 | 1 Sep 2020 - 31 Aug 2021 | 4 - 5 years | Kindergarten 2 | Kindergarten 2 |
