All the talk about parents being "involved" is great but it takes more than that.
I'm a retired public school teacher, and I can say-with absolutely NO hesitation-that the number one thing that a school administration wants to avoid conflict with is the school board.
If you want to wrest control of your schools from leftist administrators, run for and win the seats as they open on your local school board.
The leftists are determined to spread their BS and will fight tooth and nail any attempt by parents or other community members to halt their takeover. The only thing that will stop them is if you threaten their income. When you control the school board you control what goes on in your public school.
Put your public school system back the way it was intended to be. Take control of your school board and fire the azzholes who refuse to run the schools the way the community tells them they are to be run.
From what I’ve seen if people won’t fire their school boards over their drunken-sailor spending which forces you to pay $10K+ in property taxes for the privilege of living in your own home, they certainly won’t fire them over curriculum.