Homeschooling.
Co-op schooling.
There's charter schools, but that's really just a scam to get taxpayer money directly into special interests who have control over curriculum, admissions, staffing, and of course everything else that goes with running a for-profit business, often with little to no oversight, accountability, or transparency.
Insane that conservatives, of all people, cherish them so much. But it makes sense. The conservative small government agenda is a smokescreen. All they care about is exerting direct control over people they don't like and protecting the ones they do.