Public schools in the USA are in the FAIL status, in my opinion. I have two high school aged children who do not attend.
Forget going to brick and mortar prison-behavior-training and STAY HOME to learn instead.
Teachers are baby-sitters for students who are not self-motivated, and they are not needed. What teachers can provide in the role of mentor can be obtained ONLINE anyway.
Private schools are the most common alternative to the endemic and pervasive public school systemic failure. Online is the better path. And yes, it is all about content, it always is about content.