The school was founded in 1784 as Totteridge Park School in Hertfordshire. In 1865 it moved to Hendon and became Brent Bridge House school, and from 1874 to 1886, it move to Elstree and became Hillside School.[1] In 1886 it moved to Littlehampton and became The School House, and in 1905, it merged with and became Dorset House School.[2]