Westminster School is a historic public school in Westminster, London, England, within the precincts of Westminster Abbey and beside the Houses of Parliament. It can be traced to a charity school founded by the Westminister Benedictine monks before the Norman Conquest in 1066, documented by the Croyland Chronicle and a charter of King Offa. Its unbroken existence is clear from the early 14th century.[10] Boys are admitted to Under School at the age of seven and by examination to the senior school at 13, girls to the Sixth Form at 16.[11] The school has some 750 pupils; about a quarter are mainly weekday boarders, free to go home after Saturday morning school.[12] The school motto Dat Deus Incrementum refers to 1 Corinthians 3:6: "I planted the seed and Apollos watered it, but God made it grow" [13] The school was one of nine examined by the Clarendon Commission of 1861[14] and reformed by the Public Schools Acts.