sentences:  De Aston is a specialist school in mathematics and computing.De Aston School was founded in 1863 as a small grammar school, as part of a legal settlement following a court case involving funds from the medieval charity of Thomas De Aston, a 13th-century monk.Until recently, the school's Foundation Governors also owned the chapel at the site of the charity's Almshouses at Spital on the Street, a few miles away to the west.