As featured in a novel by our own Nicknamedbob!
We already have Khan Academy, which is free. My family has been buying college lectures from "The Great Courses" for years, but now you can get almost all their content streaming for an annual fee in the $150-$200 range, with study guides and essay topics downloadable.
The roadblock to this working, of course, is that most parents want or need their children to be supervised by others during the day, regardless of the (disguised) cost or the safety risks.
"As featured in a novel by our own Nicknamedbob!"
Oh, sorry. That wasn't an educational system, it was a secret insurrection.
The kids weren't going to school; they were going to work, building weapons and war materiel. In their off-duty hours, they were allowed to play video games, which taught them how to operate the weapons.
I don't have a single answer to student security at school, except that if the kids stay home, they'll be generally safer. Will they learn anything?
Home school kids seem to outshine their public school counterparts. This should be immensely embarrassing to the public school industry. That's probably why they oppose it so.
Obviously, all public schools should be disbanded and outlawed immediately, and all their resources cannibalized by home-schooling groups reorganized from the ground up. Only educational results should be the measure of success, and small conclaves of such organizations should compete with each other the way school sports teams do now.
A nationwide educational effort reorganized as described above would produce a revolution in education, which is what is needed.