| Class | Age |
| N1 | 2-3 years old |
| N2 | 3-4 years old |
| N3 | 4-5 years old |
| N4 | 5-6 years old (will be allocated to primary schools through Primary One Admission System) |
| Class | Age |
| N1 | 2-3 years old |
| N2 | 3-4 years old |
| N3 | 4-5 years old |
| N4 | 5-6 years old (will be allocated to primary schools through Primary One Admission System) |