2005 NEISA Classifications
| Class "A" Tournament | Class "B" Tournament |
| Andover | Berkshire |
| Avon Old Farms | Brooks |
| Belmont Hill | Canterbury |
| Brunswick | Concord |
| Choate | Deerfield |
| Exeter | Greens Farms |
| Groton | Kingswood-Oxford |
| Hotchkiss | Loomis Chaffee |
| Middlesex | Moses Brown |
| Milton | Nobles |
| Salisbury | Pomfret |
| St. George's | Portsmouth Abbey |
| St. Paul's | Rye Country Day |
| Tabor | St. Mark's |
| Taft | Suffield |
| Westminster | Trinity-Pawling |
| Williston Northampton |