How is it possible that the school doesn't know who wrote this? I hope a full investigation takes place and they can find the person or persons responsible. For teenagers, this is a big deal and I agree with the mom, all yearbooks should be destroyed.
Poor guy. I can imagine how hard can it be for him: for a teenager a cruel joke like this can become a big problem. I don't know if the request of destroying all the yearbooks will be accepted since it presents some practical difficulties (and economical nuisances for the school). Anyway, the damage is already done. It is not so difficult to guess that "Freak" Will become his nickname between the other students.