Horace Mann's "lethal monster" - that's what Jim Davies called kinderprison. That's a pretty accurate description of that obsolete institution of compliance and indoctrination. Oh, it works pretty well for compliance and indoctrination, just not at all well for education, which is the lie which is told to justify it.
It seems Horace Mann would be reviled by all who value education and liberty, and honored by those who support the Prussian System of child abuse.
Many "parents" support government schools as a babysitting service. They could get a better deal if they kept the money which is stolen in support of the schools, and spent it somewhere that competed for their business. I'll bet more actual education would be offered, as well.