People who get elected to sit on the school boards? I think you're actually just complaining about democracy.
My local school district has banned phones during school time (enforced by an auto-locking pouch gadget that releases the phone when school ends), and parents overwhelmingly support it.
Well Nancy, it's not 1995 anymore. Phones aren't for phone calls, we all know that. The school has phones too, you know.
Local participatory democracy is in fact pretty terrible: HOAs, school boards, neighborhood impact hearings where people complain that building apartments would let the poors move in and we can't have that.
I [given the chance] would also vote against apartments in my particular neighborhood, and it has nothing to do with being poor at all.
But it's not your fault, it's a systemic issue. The fact you even care about your property value is the problem, not the fact you have to care about it. That's not your fault, you're just playing the game you have to play like everyone else.
If you don't want to be on the defensive, try to make your position comprehensible.