<p>I think the author missed the boat sending his son to a coed school. I am told that the first five years are the most important for single sex education for boys while the last five are the most important for girls. Obviously the women’s colleges continue on that trend. Our D1went to a high school that ran itself as a boys school and a girls school on the same campus much like the old Columbia/Barnard arrangement. I predict we will see a move toward more single sex education, probably led by mothers who graduated from women’s colleges and know the advantages.</p>