Rumors yes, there were rumors of people getting caught cheating, but I didn't know anyone personally.
The people I knew on a personal basis weren't the kind to do that or really care about it enough to do so and without going into a story about the people I know and how we're all doing well in life you'll have to take my word for it.
Where there ever any rumors of that kind of thing. In a large enough class someone will be tempted to cheat, and if the school is taking decisive action there will be rumors even if they are making great effort to protect the students privacy and make the discipline a learning experience