I think it was in Grade 10 Social Studies, BC, back in the eighties mind, so it was pretty fresh then and long in the past now. We didn't exactly commit it to memory, just "this happened in 1982, here is the text" 10 question quiz or something, probably a question or two at the most on the final. Even when something is covered in school, and is on the final, the details will be hazy within a few years, although hopefully the general concepts will endure.

Of course, some of these people calling out groomers were probably in High School before the Constitution Act of 1982.