More on the South Carolina Survey
Interesting story from Greenville confirms my anecdotal observations: single-gender classes benefit girls more than boys. As for academic improvements made in single-gender classrooms, I don't pay much attention to self-reported observations from students. This is a situation where real research is required.
At the same time, however, I don't dismiss the importance of "satisfaction" surveys. Parents and students seek out choice in all forms, and single-gender classrooms is another avenue of choice.
Before anyone gets too excited about parents flocking to single-gender offerings, however, consider this perspective from Anderson.