I would prefer single sex high schools for my kids.

I went to both - girls-only first. I loved it and there were no problems with social aspects at all. I second what the others have said.

Went I went to a co-ed in Yr 11, I couldn't believe the amount of cattiness going on. The BF/GF crapola *rolleyes. It felt like a huge distraction and a whole stupid aspect I never had to bother with at the girls school.