Even if she isn't doing official extra curricular activities at school, what else is she doing besides school? I am a firm believer in "keeping them busy"

whether it's sports, volunteering, part time job, serious hobby, etc. Also, it can help them find an interest they may want to pursue in the future. For example, volunteering/working at a hospital, or with kids.
My dd is a college freshman, she applied mainly to state flagship universities and by necessity due to the sheer volume of applications it seems those schools are very numbers-driven, i.e. the gpa and SAT/ACT score are the most important factors. (They do not have any automatic admissions like another pp mentioned, however). However, all the schools she applied to (Penn State, UConn, Delaware, James Madison, Maryland, and a few others) ALL asked for extra curriculars. Also, they all asked for an essay and some gave the topic of your most important activity outside school or something like that.
I agree with the OP that college admissions have gotten tougher for the more competitive schools. If colleges are comparing kids with similar stats they may be more likely to choose the one that is more well-rounded and could "multitask" instead of just doing school, if you know what I mean.
Good luck to your dd...It's good you guys are looking at this now. I'm sure she will find something that she enjoys!
