Whilst the RAF might not have been in touch with the school, Leslie Manser has not been forgotten locally in this RAF Centenary year.
In February the Sleaford Legionnaires Aviation Society hosted a lecture on the Lincolnshire Air VCs. The lecture included the Leslie Manser story and the role played by Leslie Baveystock, which explained why the VC was not gazetted until the October of 1942. The Leslie Manser School was also included in the talk.
Lincoln Business Improvement Group have launched various 'RAF 100 Voices' Trails around Lincoln and the County. Check out the Proctor Trail which includes the Leslie Manser story and which I believe mentions the school.
https://www.visitlincoln.com/100voices/proctor-trail/
Old Duffer makes a valid point. Might be worth contacting Radio Lincolnshire.
CC