Alexander Mackenzie High School
Alexander Mackenzie High School (AMHS), formerly known as Don Head Secondary School, is a public secondary school in Richmond Hill, Ontario, Canada, serving students in grades 9 through 12. The school is managed by the York Region District School Board. The school opened in 1969 as Don Head Secondary School and was renamed Alexander Mackenzie High School in 1992, in honour of Major Addison Alexander Mackenzie, a Richmond Hill resident and philanthropist.
Alexander Mackenzie High School
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- Alexander Mackenzie High School
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Key facts
Key facts
• Name — Alexander Mackenzie High School • Former Name — Don Head Secondary School (1969–1992) • Address — 300 Major Mackenzie Dr. W. • City — Richmond Hill • Province — Ontario • Postal Code — L4C 3S3 • Country — Canada • Schooltype — Public school • Religious Affiliation — Secular • Founded — 1969 • School Board — York Region District School Board • Superintendent — Lois Agard • Trustee — Simon Cui • Grades Label — Grades • Grades — 9 to 12 • Enrolment — 1,397 • Enrolment As Of — October 2025 • Language — English • Colours — blue yellow Blue and Yellow • Team Name — Mustangs • Website — http: www.yrdsb.ca/schools/alexandermackenzie.hs/Pages/default.aspx • Lastupdate — May 2026
History
History
The original school building was constructed in 1969. Due to a construction strike, the building's opening was delayed until January 5, 1970, at which time there were 450 students. Prior to the building's completion, starting in September 1969, classes were held at the existing Richmond Hill High School. At the time of opening, some vocational courses were transferred from Stouffville District Secondary School. In 1992, a new wing was added to accommodate both increased student population and changes to the school program. A second addition of 10 classrooms opened in the spring of 2002. The school has two gymnasiums, one larger than the other, as well as three music rooms: one for vocals, one for strings, and one for band. In 2003, the Town of Richmond Hill contributed 10 "Character Matters" signs to the school as part of a community initiative. The event featured guest speaker Wendel Clark, the former Toronto Maple Leafs captain.
ARTS Mackenzie
ARTS Mackenzie
It was announced in October 2008 that AMHS would join Huron Heights S.S., Unionville High School, and Westmount Collegiate as one of four high schools in York Region to offer a specialized arts program. ARTS Mackenzie encompasses dance, theatre arts, music, and visual arts.
IB Diploma Programme
IB Diploma Programme
In 2017, AMHS joined Bayview S.S., G.W. Williams S.S., Maple H.S., and Milliken Mills H.S. as one of the York Region District School Board's IB Diploma Programme schools.
Notable alumni
Notable alumni
• Mobolade Ajomale – Olympic sprinter • Hannah Alper – activist, blogger, and motivational speaker • Ramin Karimloo – stage actor • Scott McGillivray – entrepreneur, investor, television host, author, and educator
Text attribution
Licensing
Text attribution
Part of the biographical narrative on this page reuses licensed material. Its origin, revision and licence are recorded here.
The biographical narrative on this page is based on the Wikipedia article Alexander Mackenzie High School, revision 1373745186 (EN edition), by its contributors. VALÉORINE has edited that text and built its own documentary record around it. The reused material is available under CC BY-SA 4.0, and this page's reuse of it is offered under the same licence. Everything else on this page — the chronology, the holdings, the evidence, the plates and the connections — is VALÉORINE's own record. Sources and licences.
Notes from the source article
Cited by Wikipedia
Notes from the source article
These works are cited by the source article, in its own numbering. They are recorded as its citations, not as sources VALÉORINE has verified.
- 1.York Region District School Board. York Region District School Board – Enrolment Grade By School. 31 October 2025.
- 2.Construction at a standstill at Don Head School. The Liberal. 92. 6. August 7, 1969.
- 3.Don Head secondary school to open Jan. 5. The Tribune. 81. 31. 11.
- 4.Don Head Secondary School. The Liberal. 92. 29. 10. January 15, 1970.
- 5.Richmond Hill High School on Shifts - Don Head Still Far From Completion. The Liberal. 92. 9. 1. August 28, 1969.
- 6.Notice to students of Richmond Hill High School and Don Head Secondary School. The Liberal. 92. 9. 3. August 28, 1969.
- 7.Board to cancel vocational course at high school. The Tribune. 80. 40. 1.
- 8.Town of Richmond Hill. AMHS Character Signs.
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 26 September 2026.
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