I think it is the fact that he has a record that got him suspended, rather than just kissing.
Quote:
He has been suspended for rough-housing and kissing the same girl once before.
He's been suspended for previous "kissing-related offences" (albeit a more serious one0, he kisses someone again and gets suspended again.
I do think they've probably overreacted if he's only kissed her hand, but if he's already been punished for kissing then maybe it was appropriate to suspend him.