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Seniors' evaluations of other students suggest that the actual number may be much higher.
On average, those surveyed guessed that "53 percent of their peers had cheated on a homework assignment, 32 percent on a paper or take-home exam, and 14 percent on an in-class exam."
On May 6, the school adopted an undergraduate honor code-effective beginning next semester-but only 12 percent of students said they would have had a different "approach to integrity at Harvard" if the school had one.
Harvard was involved in a major cheating scandal in 2012, in which nearly half of the 279 students in the same government class were investigated for cheating on a take-home final.
Nearly half the 2014 class-758 students-responded to the annual survey, although some did not answer all of the questions.
The survey was conducted from May 13 through May 20, and also covered other topics; including drinking, sex and pornography.