Westminster School is a public school in Westminster, London, England, in the precincts of Westminster Abbey. It descends from a charity school founded by Westminster Benedictines before the Norman Conquest, as documented by the Croyland Chronicle and a charter of King Offa. Continuous existence is clear from the early 14th century. Westminster was one of nine schools examined by the 1861 Clarendon Commission and reformed by the Public Schools Act 1868. The school motto, Dat Deus Incrementum, quotes 1 Corinthians 3:6: "I planted the seed... but God made it grow." The school owns playing fields and tennis courts in the centre of the 13-acre Vincent Square, along which Westminster Under School is also situated.