Schools
I
| Name | Category | Notes |
|---|---|---|
| Icknield High School, Luton | Comprehensive | |
| Ilkley HS | Grammar | |
| Imperial Service College, Windsor | Service College | |
| Independent College, Taunton | Other Private | |
| Inverness Royal Academy | Other Private | |
| Inverurie Academy | Academy | |
| Ipswich School | Public School | |
| Irish College, Paris | Other Private | |
| Irvine Public School | Other Private | |
| Islay High School, Argyll | Grammar | |
| Isleworth Grammar School | Grammar | |
| Islington Proprietary School | Other Private | |
| Itchen Grammar School, Southampton | Grammar |