Alberta stopped tracking class sizes. Then it changed its funding formula. Now, it's a teachers' strike issue

Alberta stopped tracking class sizes. Then it changed its funding formula. Now, it's a teachers' strike issue
Two young people hold cardboard signs in front of their faces saying, 'School zones are limited to 30. So should class sizes.'

Get a rough idea of how much Alberta’s teaching staff has grown compared to how much student enrolment has grown since the funding formula for school boards was changed.