The majority of the exams listed are developed provincially and are unique to each respective province and their related adjacent territories.
Such exams can be important factors in the determination of final grades and therefore also in scholarship decisions, college, and university admissions.
The reason for the territories adopting the curriculum of those specific provinces is as a result of the historical geography of Canada.
Yukon was formed prior to the existence of any current western Canadian province except British Columbia.
Some universities choose to raise Albertan students marks because of their provincially required exams.