Sir William Borlase’s Grammar School is part of a Multi-Academy Trust, the Marlow Education Trust.  This trust was established with the intention of developing a group of schools in Marlow and the surrounding area who are able to work together to deliver the best outcomes for students, regardless of their ability, background or needs.

It currently comprises Sir William Borlase's Grammar School and Beechview Primary School. Borlase collaborates informally with the primaries and other Marlow secondary via the Marlow Liaison Group.