Boston College says Bryant arrived shortly after the class began Thursday night and stayed for two hours until it was over. Professor Nick Nugent says Bryant's visit was not planned.
Bryant told students that he loves to learn and is interested in international marketing.
He was in the area for the Lakers' Friday night game against the Celtics, but did not play as he recovers from a left knee fracture.
Bryant did not attend college after going to the NBA directly from high school in suburban Philadelphia.