Ah, what a crazy world we live in.
It never ceases to amaze me just how stupid some people can be. There really is no other word for it. Stupid and another example of just how far down the road we have gone towards enforced inclusion, enforced acceptance, the removal of our right to not like someone and show it.
Briefly, the child was handing out invitations during class-time and the teacher noticed that he had left out two of his fellow pupils. The teacher, obviously a bit of an anally-retentive, politically correct, by-the-book kind of guy immediately confiscated the invitations. Apparently, the justification for this was that anything that occurred on school premises must be ensured not to discriminate.
My advice to the boy in question? Invite all your teachers to your party, mate… except for the jerk who confiscated your invitations.