The school opened in 1964, marking the end of a campaign by parents and local residents for the village to have its own secondary school. The school was named after Thomas More, though the education authority that named the school, Hertfordshire County Council, mistakenly believed that More previously occupied part of the land on which the school was built.[2] Lilian Caras's book, Chancellor's School - The Background, sets out the circumstances leading up to the building of the school and charts its development.[3] The school became a specialist in mathematics and ICT 2006 with its continued investment in these areas.
Chancellor's School's GCSE standards continued to rise up until 2003-2004 when it reached its record of over 73% of pupils passed GCSE with at least 5 Cs.