 He also approached the Independent Association of Preparatory Schools.But the chair at the time, Robin Peverett, did not assist, and according to reports in Devon Live the teacher was “warned off and threatened”.Peverett, headmaster of Dulwich Preparatory School until his retirement in 1990, later admitted nine counts of indecent assault on girls and a boy aged 11 to 13 between 1969 and 1978 and received an 18-month suspended sentence.