This article incorporates text published under the British Open Government Licence: "School 21". GOV.UK Get Information about Schools Service. 23 February 2023. Retrieved 4 April 2022.
This article incorporates text published under the British Open Government Licence: Wellham, Anne; Salaria, Kekshan; Maitland, Fatiha (17–18 June 2014). "School report: School 21". Ofsted. Retrieved 4 April 2023.