It's probably two or three things.
Number one is a lack of political will and leadership. It's hard to do.
The second barrier is section 91 and section 92 of the Constitution Act, which I won't bore people to death with. The point is, once you get into this interjurisdictional ball of yarn, it gets trickier and trickier.
Then add school boards to that, so there are a lot of players that need to be coordinated. That makes it harder, but just because it's hard doesn't necessarily mean we shouldn't do it. It's about equipping our kids with the skills they need: logic, reasoning, comprehension and analytical ability. Those skills will help here, for sure, but they will help in life generally. We should be teaching them that stuff anyway.