The mayor is an astute politician. Parents are fed up with this bull crap.
I hope that's right.
The Mayor is grandstanding. Most school curriculums are approved either by a committee or the Administration. The class is then presented to the board to approve if new or if a textbook is involved, for purchase. School boards do not get into the weeds in day-to-day operations. They set policy.
I would guess the Mayor has other issues where he is unpopular with the public and, like Biden, is looking for a shiny object to save his own ass.
I doubt you’d find a prosecutor who would allow the board to be charged. If anyone is culpable, it would be the administrator that approved the curriculum, not the board.