That's extremely naive. I think one of the Oz posters on here even listed some Oz schools where students would not be allowed to play rugby.
Also, we have no evidence outside of an opinion column that anyone was "banned", and I gave you a clear example from the same school, last year where the student was able to miss matches, play league and still play for NZ schools rugby team. I
If that school, which is the best rugby school in the country, has changed their requirements to have their players honour their commitment to the team, then that really isn't the evil this thread is making it out to be. Here's a few options, go to a league school, or if you want to go to a rugby school but can't commit 100% to the team then don't sign up for the team and just play league.