a book about college student trying to get into a sorority in A Florida college

She had a black father and white mother and had two little sisters. Her dad was a physician. The university she chose is a notorious party school. She hooks up a with A guy who lives with his family rather than on campus. He sees the university as a way to better himself so he can change the world rather than a place to party hard first and study later. The lead is uncertain on what career path to take. The lead meets her maternal grandparents who are very racist and cut off all contact with her mother.One girl, she befriends drops out of college when she does get invited to the sorority her mom attended. I remember the book was the first in a series detailing the first few weeks of college and would make verbal cameos in the book that was not about them.