@MYOS1634 Just so I understand correctly, a potential math major taking calc BC and Physics C as a senior may want to steer clear of most non-elite LACs, or would that be not so advanced as to be a significant factor?
No, that’s just the first year sequence. All LACs would challenge such a student. But if the student has completed differential equations senior year you need to look at the depth of the math major. The Budapest semester that some LACs offer for math majors is a good indicator of depth.