Schools in Durham Region / Durham Catholic District School Board
Durham Catholic District School Board
The Durham Catholic District School Board (DCDSB) is the English Catholic board serving Oshawa, Whitby, Ajax, Pickering, Uxbridge, Scugog and Brock. It operates 38 elementary schools and 7 secondary schools with about 23,000 students.
Head office: 650 Rossland Road West, Oshawa, ON L1J 7C4
Phone: 905-576-6150
Secondary Schools
The seven Catholic secondary schools
DCDSB secondary schools and the communities they serve across Durham Region.
All Saints Catholic Secondary School
Whitby
Archbishop Denis O'Connor Catholic High School
Ajax
Father Leo J. Austin Catholic Secondary School
Whitby
Notre Dame Catholic Secondary School
Ajax
St. Mary Catholic Secondary School
Pickering
Monsignor John Pereyma Catholic Secondary School
Oshawa
Monsignor Paul Dwyer Catholic High School
Oshawa
Catchments
Elementary catchments follow the home address
As with the public board, elementary school catchments in the DCDSB follow the home address. The school your child attends is determined by where the family lives, and secondary attendance works the same way across the board's seven schools.
Families confirm their assigned school through the board's official school directory before registering.
Official board sites
School catchment boundaries can change, so always verify with the board before enrolling.
Last updated: September 2026
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