The website niche is one of the best ways to determine what students think of Greek life on campus, which is usually specifically mentioned in the “campus life” section of whatever college you search. So, for SCU, 48% of students said Greek life is average and no one will treat you differently if you don’t participate, but only about 25% of students join. So 3/4 don’t. At Binghamton, 52% of students say the same thing, but only about 15% participate in Greek life. At Bama and SMU, 60%+ of students say Greek life is pretty big. At these schools, participation is closer to 35-50%, roughly speaking.
I think what matters is how dominant it is on campus. If it was me, I wouldn’t be too worried about SCU. I’d be more concerned about a college like SMU, where Greek life seems to dominate. Big difference between saying “Greek life is average” and “Greek life is pretty big”, IMO.
If she is really concerned about no Greek life, there are colleges that have none or very little. I’d ask her to look at the clubs listings and see which ones have active and updated events. Niche has student reviews, which can be useful for getting an idea if kids are involved in other things on campus.