Chislehurst and Sidcup Grammar School

Chislehurst and Sidcup Grammar School is a mixed-sex grammar school with academy status located in Hurst Road (A222), Sidcup in the London Borough of Bexley, England. It is located adjacent to Lamorbey Park, the Rose Bruford College drama school and Hurstmere Foundation School. Pupils at the school are divided into a series of six houses, known as Davies, Edlemann, Lester, Townshend, Williams, and Staff, while an annual school magazine, The Chronicle, is also produced by the students. The current head teacher is Nigel Walker, who has held that position since 2009.

Founded as the Sidcup County School for Boys in 1931 to meet the lack of secondary schools in the newly urbanised town, it was initially opened at 27 Station Road, with the position of first headmaster being given to Dr. C.R. McGregor Williams. In 1935, the school began moving into a purpose-built site at Critall's Corner, Footscray near Chislehurst, being renamed Chislehurst and Sidcup County School in 1938. Damaged during the Blitz, after the culmination of the Second World War, local education reforms led to the school being moved to a new location in Hurst Road.

In 1954, McGregor Williams stood down as headmaster after 23 years in the post, dying later that year. With a growing number of students, the school moved to a larger site in Hurst Road soon after. The school rose to national headlines in January 1983 following the suspension of most of the school's sixth form for drinking alcohol at the preceding Christmas party.