Certainly not restricted entirely to sciences - my Mom got her BS around 1969; when she applied to law school, the secretary actually threw out her application

Certainly not restricted entirely to sciences - my Mom got her BS around 1969; when she applied to law school, the secretary actually threw out her application because "Honey, if you want to meet lawyers [ie, to marry], just hang out in the law library, you don't actually have to go to the school." (She ended up getting an MLS instead, and loves being a librarian, so at least there's a happy ending to it)