I was a serial cheater on homework and exams all throughout high school. I often conspired with my other classmates to do so, communicating with them in code during exams and stealing the answer sheets from teachers. As awful as it sounds to say, doing so helped me get into Ohio State when the school was becoming more selective with its applicants.
But I never cheated again once I set foot at OSU. You can get away with it in high school but it seemed damn near impossible to do so at OSU. You can forget about cheating when your taking a test in a crammed auditorium surrounded by TA's. And there is simply too much at risk for me to have ever been tempted to cheat on anything else. Colleges dont play around with that crap. In high school you may just get detention or an F if you're caught. Different story in higher education