Milton District High School
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.
Canadian Improv Games National Gold Champions in 2012
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.
Hurricane Ivan struck Grenada in September 2004 and staff and students from the School spent their March break visiting Grenada to help with the rebuilding process. Radio Canada interviewed them from the scene.
A Milton student's parent opposed the use of a novel, Foxfire: Confessions of a Girl Gang, 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.
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.
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.
- Chris Hadfield, the first Canadian to walk in space.
- David James Elliott, star of the television series JAG.
- John Tonelli, NHL Centre Forward and four-time Stanley Cup Champion
- Peter McDuffe , NHL Goaltender
- Bruce Hood, NHL Referee
- Leon Stickle , NHL Linesman
- Nick Hector, 3 time Gemini Award winning film editor
- Kayla Alexander, WNBA center.
- Hurricane Ivan, Radio Canada, March 21, 2005.
- "Is it trash or insightful? - High School literature meets controversy, Canada's SchoolNet
- "At Large - Required Foul", Michael Coren, Books in Canada
- "Parents may get more say on books - Nobel Prize nominee's novel sparks controversy in Ontario education system", The Kitchener-Waterloo Record, February 05, 1997
- "Minutes - Council Meeting", October 2, 2000, Halton Hills Council
- "Steph Fennell", Ohio State Buckeyes
- Chris A. Hadfield (Colonel, CAF), Spaceflight Now, April 15, 2001, accessed April 17, 2007. "He graduated as an Ontario scholar from Milton District High School in 1977, and joined the Canadian Armed Forces in May 1978."
- "David James Elliott Celebrity Profile", For DJE Fans