is a public school therefore, the use of uniforms is not required. There is however, a dress code policy. Such inappropriate clothing includes short shorts, gang colors, and headbands over an inch thick. As of September 8, 2015, hats are allowed to be worn indoors. School mascot Sir William Mulock Secondary School's mascot is 'Billy the Raven'. Notable alumni Connor McDavid, captain for the Edmonton Oilers See also List of high schools in Ontario York Region District School Board Newmarket, Ontario Notes York Region District School Board High schools in the Regional Municipality of York Education in Newmarket, Ontario Educational institutions established in 2001 2001 establishments in Ontario