Christianity, Judaism and Islam were all strong teachers of their children long before there was public education. In many countries to this day the religious schools are the best educational systems.Before the rise of public education, most of the population was uneducated, which is Toro's point.
That is simply untrue. Sorry.
My wife and I home schooled our children. All were honor students when the were in college on their own. Public schools are a total disaster here in California and should be done away with.
Most people could read and write, which was sufficient for the economy at the time. Public education, esp the mandatory kind, was the answer to child labor, not illiteracy.