@CALSmom, not certain which LACs you have visited, but many of the top STEM graduates in the country are coming from LACs; as has been noted on many other CC’s threads, these same LAC’s are top feeder schools for Medical School, Law School, careers on Wall Street, etc.
In my opinion, the issue is the amount of money expended on mid tier private regional universities or LAC’s (below USNWR #75); if that was the likely outcome for my DD’s, I would have nudged towards a strong affordable state school alternative.
@katliamom, Bowdoin, Carleton, Hamilton, Swarthmore, Williams, amongst others, have very strong math programs with as many as 10% graduating with math degrees and many of those going on to very successful careers on Wall Street.