I may be wrong, but I believe that the NCAA cleaned up college baseball years ago, in more ways than one. But, I can't speak for other NCAA sports. There are rules and you can find them on NCAA.com, as well as some conferences have their own expectations.
A huge part of the HC's job of each program is to set and preach goals and expectations of the individual as well as the team. Remember, their primary job is to help the players to become responsible adults and citizens as well as making sure they graduate, on time, not churn out future pro players. There are exceptions to this philosophy.
Stealing signs is part of the game, and more than likely will remain so. For really good coaches, it's not hard to crack the code.
Players are drug tested when they come into the program and at times during the season, and during regionals. You also can't play if you don't make the academic requirements.
That's why I am an advocate of the college experience. Values and priorities are different than professional baseball.
JMO