Single Sex Classrooms: Do They Work?

In Today's Times, there's an article on single sex schools/classrooms focussing on the educational aspects of these schools.  The main article leads with recent research that suggests such schools are bad for both girls and boys and then some five or six educators/lawyers weigh in on the issue.  Most of the writers support the view that single sex schools don't produce better students, supporting the premise, at least tacitly, that boys in single sex schools tend to more aggression and girls in single sex schools act more girly (the article doesn't define "girly" or why that's necessarily bad).  Only one writer was strongly for single sex schools, an administrator from Bryn Mawr who points out that BM graduates more girls with majors in science and math than do technology schools like MIT.

I have no research to have an opinion beyond what's anecdotal.  I went to an all-girls high school (Holy Family Academy) located down the street from an all-boys school (Marist High) and for the most part enjoyed the experience, particularly not having to worry about what the boys thought of my looks or actions.  I suspect I matured more slowly (sexually, that is) than if I had attended a co-ed school but in my view that was all to the good.   How great it was not to worry if I had a "bad hair day" or a new spot on my nose.  I was something of a cut-up in class, which I doubt would have been the case if boys were in the classroom.

Those who support co-ed may be correct but I think a bit more research is needed before we throw out the baby with the bathwater.  In the meantime, I'm glad there was a Holy Family Academy and that I have wonderful memories of acting like a goof without worrying about how the boys would react.  Anyone want to weight in on this?  Feel free.