Davis was awarded a scholarship to Brandeis University in Waltham, Massachusetts, where she was one of three black students in her class. She encountered the Frankfurt School philosopher Herbert Marcuse at a rally during the Cuban Missile Crisis and became his student. In a 2007 television interview, Davis said, "Herbert Marcuse taught me that it was possible to be an academic, an activist, a scholar, and a revolutionary." She worked part-time to earn enough money to travel to France and Switzerland and attended the eighth World Festival of Youth and Students in Helsinki. She returned home in 1963 to a Federal Bureau of Investigation interview about her attendance at the Communist-sponsored festival.