Ingersoll District Collegiate Institute (aka I.D.C.I.) is a public high school in Ingersoll, Ontario. As the only high school in Ingersoll, it also serves the village of Thamesford, and the rural areas surrounding both communities It is in the Thames Valley District School Board (TVDSB). It is located in the north end of the town on Alma street. Historian and educator J.C. Herbert was a long-term principal of the school, where he has an award named after him.{J.C. Herbert Award}

Notable alumni Mark Hominick, MMA fighter Ella Shelton, PWHL New York Defence Jeremy Hansen, astronaut Robert Budreau, filmmaker

See also Education in Ontario List of secondary schools in Ontario

References