The school is split into five blocks. It has three playgrounds and one big field.
S block or the Science Block – a three-floored building in which Science and Computing are taught. Also contains the main hall, the school canteen, one of the schools' two gyms, changing rooms and several offices.
R Block or the Richards Block – named after Clive Richards, who taught at the school for a significant number of years. It is the newest building in the school, built in 2003, and is used for English, Maths and Geography.
L Block or the Library Block – contains the main library, the staff and reprographics rooms as well as Main Reception and the offices of the senior staff.
H Block or the Humanities Block – the largest building in the school in which History, Religious Studies / People and Community Studies, Modern Foreign Languages, Drama and Music are taught, among others. H Block contains the second, more commonly used gym, changing rooms and a dance studio, usually used for the dance aspect of PE. It also contains two drama studios and two fully equipped Music Rooms.
A new building, which will house a new sixth form centre and SEND centre, began construction in February 2019, and was completed in September 2019.
Academic standards
The Corsham School was described as "exceptional" in increasing the number of pupils attaining top level GCSE grades by Bob Wolfson, Wiltshire's education director, in January 2004. More than two-thirds of Corsham's pupils achieved five or more A* to C grades at GCSE in 2003, a big improvement from just over half the students in 2002.School Standards Minister, David Miliband, announced that he was keen to see the strategy spread to most schools in the country. In 2009, the school received an 'outstanding' Ofsted report. In December 2012, the school achieved a rating of 'good'. In 2017 it got downgraded again to "Requires Improvement" Ofsted report. In September 2019, as one of the very first schools to be inspected under the revised inspection regime, it was once more rated as 'Good'.
The Corsham School is noted for its alternative approach to student leadership. After removing the traditional student council system in 2014, a new system was introduced whereby there are Student Leaders appointed from the sixth form. There are different Student Leader departments in addition to an Internal and an External Director. In the academic year 2015/6, under the premierships of Oscar Wilson and Ben Hayday, there were over 200 Student Leaders aged 12 to 18. The current Directors of the Student Leaders are Martha Benedict and Elena Bateman. Some of The Corsham School's Student Leaders' work has included:
