No kidding. What an arrogant, elitist thing to say. You should loan him your FReep name.
NEVER!
I think most real schooling is home schooling whether the student goes to a private or public school. Where parents give a damn and act like an adult, the children generally turn out fine. There was one of each in my family and both are very educated and prosperous.
Incorrect evaluation of our educational system leads to the conclusion that it is a total pile of crap. Taking out the scores of the Incorrigibly Non-teachable and those w/o English at home would make the rest comparable to European schools.
There would be a strong correlation between percent of minority students and scores.