The school began a program of development and expansion in 1991, adding and renovating many buildings over the subsequent two decades.
This included two new Study Centres, the "Study Centre" and the "Sindalls Building", a major renovation of the Chemistry block, the "Jowett Building", a new, expansive Science and Design & Technology block, the "Feoffees Building", a new Music building, a new Art building, the large "Walker Building" which contains the school library, called 'The Elizabeth Preston Library', History, Psychology and Modern Languages classrooms, a new Humanities building, the "Coly Building", including RE and Geography classrooms, a new canteen named "Take Five", and a complete refurbishment of the "Cottrill Hall", the main school hall.

On 1 January 2011, Devon County Council ceased to maintain the school.
 The school became one of the Coalition Government's Academies.
Colyton Grammar School Academy Trust, an exempt charity and company limited by guarantee, assumed responsibility for this state-funded independent school.
 In late 2013, the Head of Science was convicted of making and distributing indecent images following a police investigation into his online activities.
The school began a program of development and expansion in 1991, adding and renovating many buildings over the subsequent two decades. This included two new Study Centres, the "Study Centre" and the "Sindalls Building", a major renovation of the Chemistry block, the "Jowett Building", a new, expansive Science and Design & Technology block, the "Feoffees Building", a new Music building, a new Art building, the large "Walker Building" which contains the school library, called 'The Elizabeth Preston Library', History, Psychology and Modern Languages classrooms, a new Humanities building, the "Coly Building", including RE and Geography classrooms, a new canteen named "Take Five", and a complete refurbishment of the "Cottrill Hall", the main school hall. 
On 1 January 2011, Devon County Council ceased to maintain the school.  The school became one of the Coalition Government's Academies. Colyton Grammar School Academy Trust, an exempt charity and company limited by guarantee, assumed responsibility for this state-funded independent school.  In late 2013, the Head of Science was convicted of making and distributing indecent images following a police investigation into his online activities.
Colyton Grammar School