@juillet - I’d be wary about using Hillel’s college search, as the info isn’t very accurate or helpful, especially for Orthodox/observant/religious students. As for the bestcolleges list: it’s not the top 50 colleges with active Jewish communities, but rather their top 50 academically ranked colleges, and then it tells you a little something about their Jewish life – so I wouldn’t recommend that at all. If you want accurate info and rankings, check out http://theheart2heartproject.org/map