Link doesnt work for me, either. Kissing someone on the forehead is just a way of showing affection. I also communicate through touch. We dont always know what's appropriate and what isnt. Was he kicked out of school permanently, or just suspended?
either way, it's wrong. He didnt know it was appropriate and didnt do it deliberately to annoy. He should simply be told when you can touch, who you can touch. All those social rules are complex, and the kid needs to be taught, but not punished, because it's always wrong to punish someone for something he didnt do deliberatly, when he meant no harm. never punish someone for something he did innocently. it's an injustice.