[4] A 1660 document outlined the original terms for the founding of the school: "William Vaughan, Edward Gwyn and William Death donated land and property near the Market House in Dartford High Street, the profits from which were to be used for maintaining a school and for and towards the supporting of one honest sufficient and learned man in grammar, as to them should seem fit and convenient, to be elected, chosen, and approved of, for the teaching, instructing and eruditing of children in the town of Dartford, in the knowledge of grammar, as heretofore has been used according to the charitable and pious interests and meaning of the said William Vaughan, Edward Gwyn and William Death re: 24th March 18 Elizabeth I.

[citation needed] Other buildings include the Gwyn building, named after Edward Gwyn, one of the school founders, containing technology and business teaching rooms, as well as the Kaika (Sixth Form) centre, where five new teaching rooms were opened in 2008, mainly for sixth form use, named the John Field Suite after the late chair of the governors.

The Mick Jagger Centre was opened in March 2000 by The Duke of Kent, and hosts a number of performing arts events.

From Summer 2009 to Spring 2010, the Mick Jagger Centre and part of the Pochin and Stephenson blocks underwent a major redevelopment, which provided a new drama studio, new science laboratories, a food technology lab, a new staff room, new art rooms and classrooms.

In 2014 to 2015, the Mick Jagger Centre was redeveloped to include several new classrooms and new music practice rooms.