In Oregon, we voted down a tax increase, despite the hand-wringing ads run by the corrupt teachers' union, but they managed to get the governor and legislature to sign a budget to raise taxes, so they can have an even fatter budget.
Now, as we collect signatures to reject that increase, teachers are using their classrooms to indoctrinate children into begging their parents to not sign the petition, and giving them propaganda printed up by the teachers' union that summarizes their position.
You don't have a school problem; you have a problem with your state laws. In Missouri, NO taxes can be enacted without a vote among those affected, and school taxes (not bond issues) require a supermajority. It's also illegal for school personnel to lobby for tax increases in school, although they can put out brochures that only discuss budgetary issues.