Where do we find these, “good public schools?”
I find them in many small towns, where the teachers are decent people who love kids and want to share their knowledge and traditional values with the next generation. So long as conservatives don't intentionally abandon the schools and leave the children of uninvolved parents vulnerable to the manipulative liberals who go into teaching to lead the younger generation astray, vast swaths of "flyover country" will have good schools.
I find them in those suburbs where the parents value education and stay involved to keep the schools from going astray and teaching condoms and queer pride ahead of reading, writing, and arithmetic. The high schools with very strong and highly ranked AP programs are emphasizing knowledge.
Finally, I find them where the parents talk with their public school kids every night. It's hard to go too far astray if the kids come in the next day and challenge what the bleeding heart liberal teacher said the previous day. My kids have all gone to public schools or are going to those schools, and they are only rarely exposed to liberal nuttiness. When it does happen, we take it as a learning opportunity, and my kids seem not to have ever accepted the liberal spin on values. I'm very proud of them for their morals - and their academics are strong too.