Ipswich High School was opened as a school for girls in the Assembly Rooms in Northgate Street, Ipswich, on 30 April 1878 with 43 pupils. The first headmistress, Miss Sophie Youngman, held the position for 21 years and the school flourished and expanded under her leadership. She was succeeded by Miss Kennett and, in 1905, the Council of the Trust purchased a large private house and grounds in Westerfield Road, Ipswich. The move provided a more modern classroom standard, science laboratories and a playing field.