| Year Group | Max. Class Size on Average | Teaching/ Assistant Staff per class | Child age by 1 Sept. |
| Pre-Nursery | 16 | 4 | 18 months * |
| Nursery | 16 | 4 | 3 years |
| Reception | 20 | 2 | 4 years |
| Year 1 | 22 | 2 | 5 years |
| Year 2 | 22 | 2 | 6 years |
| Year 3 | 22 | 2 | 7 years |
| Year 4 | 22 | ** | 8 years |
| Year 5 | 22 | ** | 9 years |
| Year 6 | 22 | ** | 10 years |
| Year 7 | 22 | ** | 11 years |
| Year 8 | 22 | ** | 12 years |
| Year 9 | 22 | ** | 13 years |
*Children may join Pre Nursery during a current academic year when they turn 18 months old, assuming that they will also turn 2 by 1 September. i.e. they turn 18 months before 1 March.
**Children in our Years 4 – 8 classes will be taught by a range of subject specialists with the support of subject specific teaching assistants and at times, class sizes will vary. However, in principle the ratios of children to staff will remain at no more than 11:1.
| Child age by 1 Sept. | Brighton College / British system schools | American system schools | Australian system schools | Singapore system schools |
| 18 months * | Pre-Nursery | Pre-Nursery | Pre-Nursery / nursery | Nursery 1 |
| 3 years | Nursery | Preschool / Pre-Kindergarten | Preschool | Nursery 2 |
| 4 years | Reception | Pre-Kindergarten / Kindergarten 1 | Preschool | Kindergarten 1 |
| 5 years | Year 1 | Kindergarten / Kindergarten 2 | Prep | Kindergarten 2 |
| 6 years | Year 2 | First Grade | Year 1 | Primary 1 |
| 7 years | Year 3 | Second Grade | Year 2 | Primary 2 |
| 8 years | Year 4 | Third Grade | Year 3 | Primary 3 |
| 9 years | Year 5 | Fourth Grade | Year 4 | Primary 4 |
| 10 years | Year 6 | Fifth Grade | Year 5 | Primary 5 |
| 11 years | Year 7 | Sixth Grade | Year 6 | Primary 6 |
| 12 years | Year 8 | Seventh Grade | Year 7 | Secondary 1 |
| 13 years | Year 9 | Eight Grade | Year 8 | Secondary 2 |
