Since the education system is very inconsistent federally, and is different in each province, doing it on a federal level would interfere and invalidate some of the parts of school that people learned, and teaching people more advanced stuff compared to stuff they might not have learn, so to give them advanced classes/more classes that they might not have been apart of or not available inside the place of their education. So provincial level so that the education can be consistent towards what they were learning in their primary school.