 Although the school has moved location on several occasions , each of its former buildings is still in existence . The school was founded by the Guild of the Holy Trinity in 1379 above the south porch of St Peter 's Church . The Guild was a powerful force in the later Middle Ages . The historical name " Schola Sanctae Trinitatis De <unk> " is still used on the school 's crest , which is derived from the seal of the Wisbech Corporation ( itself based on the former Guild seal ) and features the seated figures of St Peter and St Paul . The first record of a schoolmaster dates from 1407 when one Maurice Plank was given leave to study at Cambridge University for two terms on the understanding that he would appoint an usher to teach in his absence . 
