I don't think that the question is about public school. I went to public high school here in Spain and I found it fine. Maybe there are more factors than public

I don't think that the question is about public school. I went to public high school here in Spain and I found it fine. Maybe there are more factors than public vs private. For concerned fathers, I would recommend finding some side activity, preferably sports, that help socializing. Yes, you have to put time and effort. Children responde well if it's not imposed but chosen, parents play with them and it's presented not only as a physical challenge, but also as a mind game. Sports can also be "hacked". Also there's music.