The school was founded in 1541 by mayor Thomas Chipsey, as the town's free boys grammar school. In 1557, the school moved to St. Gregory's church, which was adapted for its use. The School remained on this site until 1864, when it moved to the Corn Exchange in the Market Square. In 1870, additional premises were opened in Abington Square to educate a further 200 pupils. Due to its popularity, the school moved again in 1911, to new buildings constructed on the present site at Billing Road.
