Why don’t they do something? Because in general they don’t have the power to control what goes on in the government schools (hint: they don’t control teacher training, curriculum, and many other policies set by law), because they are government “education” welfare queens, and because they themselves are afraid of the woketards or are woketards themselves.
There are parents who are doing something - they’re known as “homeschoolers”. They deprive the government schools of their children and the capitation money they would otherwise get. Do you want a revolution, do not institutionalize your children in government schools...and don’t try to hide behind the BS excuses such as “I don’t know how” or “I can’t afford it”.
the homescoolers still are paying for the government schools through their property taxes.