I wouldn't send my worst enemy's kids to a public school.
So-called "Catholic" schools attached to the Novus Ordo sect do more harm than good. I made the mistake of putting my daughter in one, thinking that it would be a better option than public schools. Wrong.
Parochial schools in the NO world have been responsible for millions of young people losing their faith.
I know that the plural of anecdote is not data, but just look at the case of Lady Gaga, lifelong parochial school student. What did she learn there? Go look at the webpage of the school she attended. Their priorities are defending gαys and protecting the environment.
Take a gander at their website. No mention of the Catholic Faith whatsoever. Most of these parochial schools are embarrassed by their origins.
http://www.cshnyc.org/Look at the public figures and mass media entertainment stars who went to "Catholic" schools. Then show me one, just one, who defends or practices the Faith.