Archbishop Denis O'Connor Catholic High School

Archbishop Denis O'Connor Catholic High School
The front entrance of Archbishop Denis O'Connor Catholic High School.
Address
80 Mandrake Street Ajax, Ontario L1S 5H4 Canada
Information
Type	Catholic school, high school
Motto	Nil sine fide et labore
School district	Durham Catholic District School Board
School number	703923
Principal	Mr. D. Chambers
Grades	9-12
Enrolment	Approximately 800-900 (2014)
Language	Canadian English, and Canadian French
Campus	Suburban
Colour(s)	Green and Yellow
Athletics	Baseball, Soccer and Basketball
Uniform colours	Green, Grey, and White
Website	Archbishop Denis O'Connor Catholic High School

Archbishop Denis O'Connor Catholic High School (abbreviated DO'C) is a Roman Catholic high school located in Ajax, Ontario, Canada, within the Durham Catholic District School Board. It is named for Archbishop Denis T. O'Connor, a priest who was born in Pickering in 1841, and who became the third Archbishop of Toronto, Ontario, Canada in 1899. The school has students in grades 9–12 and offers a wide range of academic and extracurricular activities. The current enrollment is approximately 800-900 students. The school colours are green and yellow, and its motto is Nil sine fide et labore, which is Latin for "Nothing without faith and work."

In 2014, the school celebrated the 50th anniversary of its opening in 1964.

Archbishop Denis O'Connor Catholic High School was founded by Father Leo J. Austin and was officially opened in September, 1962 in Whitby, Ontario. The school was moved to its new home of Ajax in 1984. In November 18, 1984 it was officially opened and blessed by Cardinal Carter. In 1991 a major addition was constructed which increased its capacity to approximately 1,000 students.

The school is home to a wide variety of athletic and academic activities. It has highly talented sports teams, such as their senior boys basketball team and Varsity Boys Baseball Team. The senior boys' soccer team has proved to be one of the most successful teams in the Durham Region, winning five Lake Ontario Secondary School Association (LOSSA) championships in a row.

The school's students generally come from the following Catholic Elementary Schools which are all located in Ajax: