Integrity suffers when you know what's right and still do otherwise. If you dismiss the institution entirely, integrity doesn't suffer. Not giving money to the Church is a sin, but if you aren't taking the Church seriously, your integrity is fine. Ignoring a beggar who is obviously an imposter is fine, but ignoring a beggar who seems legit corrupts integrity, even if the legit beggar is in fact fake.
The reward for integrity is entirely personal. There's no need for any societal input aside from maybe motivating people to have integrity. There can be some "sacrifice" sure, but in this context there's no real sacrifice. People should earn their grades.
I don't know if you're already out of school, but if you are, can you afford to get caught? Is the system against you when you face some sort of punishment?
> I'd be bothered with my own stupidity if i did not cheat.
What? I'd be bothered with my own stupidity if I felt I couldn't get a good grade without cheating. I put in a minimal amount of time/effort in university where the subject matter didn't interest me, but always did fine without cheating.
jumping through hoops to get a degree doesn't seem stupid enough to you already? Unfortunately, this is what our world is now, and you have do play this game if you want to be in the middle class. The least you can do is make the process less painful by cheating your way through.