If you follow The Court (link at right), you'll note (in the comments) that I recently forgot the exception to the Byzantine constitutional amendment procedures for amendments which only apply to one province. As another commenter pointed out, only the permission of the provincial parliament is needed for certain amendments, including the religious schools provision. I blogged about this recently as well. Oops?
In my defence, it's been two years since I took constitutional law...no, nevermind, I'm just terrible.