As someone who has experienced public, private, home, and online schooling across all levels and through college, I most detested the rigidity and lack of substance I encountered when enrolled in the state system. There were good classes, but overwhelmingly they were outshone by the Catholic schools I've been in.
Anecdotal? Yes. But with almost no exceptions, my fellow classmates agreed that we preferred where we were at to state schools. Usually the ones who left were those who wanted to get involved in bigger sports programs. I've got no beef with state schools, they get the job done, but the ideal society is one that encourages a diverse learning system where everyone can balance financial, personal, and other factors when choosing a school.