Second the student newspaper stuff.
The was one school we looked at that is touted here as super liberal, and which in theory would have been a great match.
One of the turn-offs for me were some opinion pieces (at least, I hope that they were opinion pieces) in the student newspaper that I found… cringy - not conservative American POV, but nevertheless cringy. My kid would find them annoying. (Granted, my kid finds me annoying.)
A school may have a casual dress code and still have some subset that thinks… inflexibly.
The question is, is the place somewhere where the student will be able to find their tribe (and the whole school doesn’t have to be their tribe), with few enough of the types that are sheer torture to be around.