I think the fundamental issue could be that these cities require kids to be bussed around, which is an issue I wouldn't know how to solve.
If that could be solved, kids moving from school to their crafting courses isn't much an issue. On the management part, you need a dedicated teachers either way, they can be paid by the school or paid by the town, that doesn't make much difference for them (except perhaps a lower level of certification between a full blown school teacher and someone with a limited teaching license)
On the curriculum, if there is some certification given at the end of the courses I see how being part of a school helps, but if it's targeted at learning and/or enjoying the craft it's less impacting (in particular for things like cooking, gardening. etc)
This is the model most European cities take as far as I know.
If that could be solved, kids moving from school to their crafting courses isn't much an issue. On the management part, you need a dedicated teachers either way, they can be paid by the school or paid by the town, that doesn't make much difference for them (except perhaps a lower level of certification between a full blown school teacher and someone with a limited teaching license)
On the curriculum, if there is some certification given at the end of the courses I see how being part of a school helps, but if it's targeted at learning and/or enjoying the craft it's less impacting (in particular for things like cooking, gardening. etc)
This is the model most European cities take as far as I know.