Single sex schools do not teach girls how to compete in a man's world. The fact that boys are bad for girls in school is obvious, check out the number of unwed mothers. You had to go undercover to figure this out? Hope it wasn't undercover at an all girls boarding school. C'mon Slate, how about a few articles on credit card interest rates and how credit card interest keeps money out of circulation in the economy. How about some serious digging into the outsourcing of American industry, particularly pharmaceuticals and the high prices we continue to pay for medicines and health care. I know of at least seven people who went to Ireland for Dental.