Milton District High School is a public secondary school located in Milton, Ontario, Canada. MDHS, which is commonly referred to as M.D. by locals, is part of the Halton District School Board, and educates approximately 1050 students. The school opened in 1960, before which time secondary school students in town had attended the Milton High School on Martin Street. When the new high school opened, grade 10 to 12 students were transferred there, and Martin Street School became a high school, serving students in grade 9 only. MDHS remained the only secondary school in Milton until E.C. Drury High School opened in 1980, followed by Bishop P. F. Reding Catholic Secondary School in 1986.
IN 2010, the MDHS Improv Team were national finalists in the Canadian Improv Games held at the National Arts Centre in Ottawa. They placed 4th, among approximately 400 teams from across the country. IN 2011, the MDHS Improv Team placed first, winning gold in the Toronto Regionals of the Canadian Improv Games, moving on to the National Arts Centre in Ottawa for the national competition. IN 2012, the MDHS Improv Team again placed first and won gold in the Toronto Regionals. At the National competition of the Canadian Improv Games at the National Arts Centre in Ottawa, Milton placed first in the semi-finals then continued to win gold in finals night. They are currently the national champions in CIG.
A Milton student's parent opposed the use of a novel, , written by Joyce Carol Oates, in the grade 12 advanced English course, due to its themes of sexuality and violence, and the profane language used. This raised significant questions about the extent to which books used in high schools should be censored and Ontario's former education minister John Snobelen said that he sympathised with the group Parents Against Corrupt Teachers who lobbied the Halton board of education to remove Foxfire from the school.
Transport petition
On October 2, 2000 Halton Hills Council agreed to forward to Transport Canada a petition from students of Milton District High School, E.C. Drury School, and Georgetown District High School that requested the installation of a set of barriers at the railway crossing on the Fourth Line and CN Rail.
Athletics
While a student at the school, Steph Fennell was the silver medallist at the Eastern Canada Cup and a semifinalist at the Canadian Summer Nationals, both in the 100-yard backstroke. The school has a large football and soccer field.
