What is meant by "party scene"?

Swarthmore has an A+ overall grade but a C+ for party scene

How do you find this out?

I am not saying there should be “no parties” but my impression is that at a “party school” a significant percentage of the students prioritize parties and those who enjoy academics might not easily find people to share their interests or want to engage in intellectual discussion beyond what was required for classes. A friend (who is a prof) recently told me that her students shy away from appearing “too smart.”