Every region of Canada has different school boards. Each board is in charge of a number of schools in the district and control the syllabus, teaching staff and anything to do with the students in those schools.
Some of the board sites are:
http://www.cdnsba.org/ This is the Canadian School board association
http://www.peel.edu.on.ca/ This is the Peel board for schools in Brampton, Mississauga and Caledon
http://www.vsb.bc.ca/ This is the Vancouver school board site
http://www.tdsb.on.ca/ This is the Toronto school board site
http://www.ucdsb.on.ca/ This is the Upper Canada school board website
http://www.yrdsb.edu.on.ca/ This is the York region school board
Hope this is of some help to you!
Here are some websites that will help you with the different types of schools and admissions processes.
http://www.studycanada.ca/ gives you information on higher studies and institutions.
http://www.schoolsincanada.com/ will give you more information on the same as above.
http://www.schoolfinder.com/ will help you find schools in different parts of Canada
If you have any specific questions please do write to me at the email id mentioned on the home page.