On the Admissions Information Form of the University of Waterloo, there is a question that asks me to list all my secondary and post-secondary schools. I attended one school from class 1 to class 8, and then shifted to another school, which I attended till class 12. Am I required to mention the school I attended from class 1 to class 8?
No. Your secondary school would be the one that you attended from 8-12. You have no post secondary school if you have not yet graduated high school.