A Brown University professor says he will no longer allow students to take exams at home after he caught a large chunk of his class cheating on a test. Economics Professor Roberto Serrano said he allowed students to take a midterm at home, and 40 students, nearly half the class, earned a perfect 100; among the 86 students in the class, the average overall class score was 96, the Chronicle of Higher Education reported July 6. “I immediately knew that something was fishy.