Our take: After months of comparing take home exams, Harvard officials are investigating more than 100 students for plagiarism. In recent years several other institutions, including the ACT and SAT, have dealt with similar large-scale cheating scandals. Bloomberg reporter John Lauerman explains the scandal:

About 125 Harvard University undergraduates are being investigated for plagiarism on a final exam earlier this year, the most widespread cheating scandal in living memory, college officials said today.

All the students, who were in a course with more than 250 enrolled, will face hearings before Harvards Administrative Board, Jay Harris, dean of undergraduate education at the Cambridge, Massachusetts-based school, said today in an interview.

Harvard professors confirmed the copying after months of reading through the take-home exams beginning in May, Harris said. Those found to have plagiarized may be required to withdraw from school for a year, Harvard said in a statement.