Are Lafayette and Lehigh good for me?

Hi,
So I’m applying to Lafayette and Lehigh RD, but I’ve read some negative reviews on them. Can anyone tell me about the social atmosphere there? I don’t drink or do drugs, I’m academically focused, not interested in Greek life. Diversity, international affairs, and social activism are important to me (I’m biracial, half black half white.) I go to a very clique-y, white, upper middle class high school and I’m wondering if the social scene is very divided like it is at my school. Any responses will be very appreciated!