Schools
| Name | Category | Notes |
|---|---|---|
| Ackworth School | Other Private | |
| Acton County Grammar School | Grammar | |
| Acton Technical College | FE College | |
| Adams Grammar School, Newport (Shropshire) | Grammar | |
| Ainslie Park High School, Edinburgh | Grammar | |
| Airdrie Academy, Airdrie | unknown | |
| Aldenham School | Public School | |
| Alderman Newton's GS, Leicester | Grammar | |
| Aldridge Grammar School | Grammar | |
| Alexandra School, Dublin | Other Private | |
| Alexandra School, New Zealand | Other Private | |
| Allan Glen's College, Glasgow | Other Private | |
| Alleyn's School | Public School | |
| Allhallows Lyme Regis | Other Private | |
| Alloa Academy | Other Private | |
| Alsop High School, Liverpool | Grammar | |
| Alston College Preston | Other Private | |
| Alton College | FE college | |
| Altrincham GS | Grammar | |
| Amersham Hall School | Other Private |