Put her in public school! I went to public school my whole education and I'm in college now ... public state school.
There will still be "those mothers" with "those kids" who drive you crazy. "Those people" are everywhere. But if your child is being punished socially for your "mistakes," she'll most likely be better off in a public school with normal surroundings.
Look around for one school that's better than the others. Even within a county, things can be very different. One school will be better than another, newer, cleaner, with teachers that care more.
If this is your gut feeling as a mother, you're probably right. Talk it over with your husband.
I hope you can come to the best decision