Whitmore High School was created in September 1974 when the London Borough of Harrow adopted a comprehensive system of education.

Whitmore is now an established community comprehensive school with a sixth form and is a specialist Science College.

Whitmore opened its sixth form in 2006 as part of the borough's "collegiate" post-16 offer.

[5] Along with the rest of the school, Whitmore's sixth form was judged as "Outstanding" by Ofsted in 2015.

[1] The construction of a new sixth form block began in late 2013, and the finished building opened in 2015, consisting of six classrooms and a new sixth form common room and study area.