[abeyer]

Yeah, I'd second this for a couple of other reasons, too...

First, I think this is an example of when it might be _good_ to find people outside your "bubble" and just filtering by demographics works against that for no good reason.

Second, if you want to filter people, timezone as already pointed out, and also spoken languages, and maybe some sort of "pace" or "hours per week" would be more practical and useful filters that are actually relevant to forming a study group.