Actually, Pipes2's approach is straight from the real world; it's a "punishment fits the crime approach" to teaching accountability. I'm a former criminal prosecutor so I strongly believe in accountability. However, the punishment should fit the crime. We don't take someone's license away permanently if they speed one time or even if they get one DUI. That is a similar comparison to a player being kicked off a team for 1 rule violation (any rule short of committing a violent felony). The adult criminal justice system includes probation and diversion programs which are designed to allow us adults to learn from 1 time mistakes without suffering life long consequences.
We should at least give kids the same chance to learn from their mistakes. There is a reason that juveniles are treated differently under the law and can only be tried as adults in very rare circumstances: the scientific evidence proves that kids' brains are not fully formed and therefore their decision making capacity is limited. So they deserve at least the same chance of redemption in their HS sports career. Suspension from games or some other consequence for a first rule violation is a reasonable way to hold a first offender accountable to the team/school.