I agree with most of what you're saying, especially about after school hours.
But yes, there had been some issues with kids being hit by cars. I guess if you don't know, then you don't know. I shared one in a post further up.
Enforcement by police and better education both cost extra money - which is exactly why neither of them will happen
Budgets and the almighty buck always come before better ways of doing things.
I was happy to see this change, because I knew it was the only change we were going to see.
And yes, I have been ticketed in one of those 30 km/h zones. I was going to another school for Professional Development, there were no kids in class all across the province on that day. It sucked, but that's life, and it only happened once.