In 1930 the house and grounds were purchased by the Society of the Sacred Heart and opened as a school with 40 boarders. The Society ran the school as a charitable trust until 2000 when it became an independent school. It briefly participated in the Assisted Places Scheme during the 1990s until its abolishment. In 2003, it absorbed the nearby all-girls Butterstone Prep School due to the latter's financial difficulties. Its girls were transferred 22 miles to Kilgraston and one of the boarding houses was named Butterstone after the school.