I went to secular college unfortunately, but almost none of the things originally mentioned in this thread were a problem. I’ve never heard of anything being due Saturday night, also if something is scheduled for Saturday you can get it moved for religious accommodation; it’s legally mandated.
The party lifestyle, the extreme cases of untznius outfits that occur in the summer (whatever is the worst thing you can imagine is probably an underestimate unless you’ve experienced public college in the warm weather), and the epidemic of anti-religious Professors are the real problems. Remember, they recently found that over 50% of American Sociology professors openly identify as Marxist. Admittedly, that’s a particularly bad subject, but still.