Some 125 Harvard University students are being investigated for cheating after school officials discovered they may have shared answers or plagiarized on a final exam. Harvard officials are not releasing the class subject, the students’ names or the exact number being investigated. They said on Thursday that the undergraduate class had a minimum of 250 students and possible cheating was discovered in roughly half the take-home exams. The Boston Globe reported that independent groups of students appear to have worked together by email or other means to come up with answers to questions on a spring take-home in violation of Harvard’s no-collaboration policy.  In its official handbook, Harvard specifically instructs students to ‘assume that collaboration in the completion of assignments is prohibited unless explicitly permitted by the instructor.’