I am trying to collate a full list of all schools in the county where chess is played on a regular (at least weekly) basis. Below is a list (incomplete I'm sure) of known schools. Here you can help, because there may be a school near you where chess is played that I haven't heard about. For example, there may be schools in Newmarket, Hadleigh, Sudbury, Felixstowe, Saxmundham, and elsewhere.
Please let me know if you know of any chess-playing schools not listed.
Royal Hospital School (Holbrook)
Handford Hall Primary
Ranelagh Road Primary
Bury St Edmunds
King Edward VI Upper
St Louis Middle
St James Middle
Moreton Hall Prep
Old Buckenham Hall (Brettenham)
Needham Market Middle
Creeting St Mary Primary
Sir Robert Hitcham's (Debenham)
Woodbridge School / Abbey Prep.
East Bergholt Primary
Alexanders College (Bawdsey)
Well, that's a reasonable start. Looking forward to hearing of more schools.
(updated 19 October)