Agreed
I have the perspective of one whose primary years were spent in a Calvert System private school for US military and businessmen in Istanbul in the fifties with Uncle Sam paying for it, then re-entering American public schools and coming to the realization that I was multiple years ahead of everyone else. I got more US and World history in 3rd and 4th grade tan I got from 7-12th. The other subjects were comparable. And then as an adult I saw what JrHi/middle schoolers were getting in the 60s and that standards were declining. In Istanbul the first three grades got read to by the teacher for an hour in each 6 hour day from Dickens and Ivanhoe and The Black Arrow, and other what we would consider now as adult books that appealed to kids without being way out of our ken like Shakespeare which the 7th graders had to read themselves. My oldest went to PS but got all advanced classes including Latin in HS. Those classes are not offered any more in that system and she studied a lot on her own time. The other three went to a mix of parochial schools and home school because I and my wife, who was a school teacher, were disgusted with public schools