Princeton University is a member of the Ivy League, an elite group of top-ranked schools in the northeast US. The research university offers degrees in 35 departments and has more than 7,000 students (4,900 undergraduates and 2,300 graduate students). More than half of its students receive financial aid. One of the US's richest universities (behind Harvard, Yale, and Texas), Princeton has an endowment of more than $10 billion. The highly selective school admits about 10% of its total applicants. Nobel prize winners associated with Princeton include Woodrow Wilson (Princeton's president before becoming US president), writer Toni Morrison, and physicist Richard Feynman.