Punished for cyber-bullying, wondering what my rights are, please help!

At my school recently there were a couple posts on facebook by two students who called someone a "cunt." However this person was not named, although most people knew who it was talking about. A few days after the status over thirty kids were called into a meeting and shown a video and lectured, and then given detentions by the administration for liking this status. I was wondering if by liking a status there is enough of a case that the school can make to give detentions out, especially if there were no names dropped. The reason behind the detentions were: harassment/confrontation and cyberbullying. Personally I liked the status and I refused to sign the detention form prior to understanding cyberbullying laws, and my rights as a defendant if I were to debate this case with the administration of my school. I live in California, which has pretty strict laws against cyberbullying. tl;dr: California students punished by school administration for liking a facebook status in which no names were mentioned, is this legal, or an infringement upon those students rights?

Edit: Thank you all for your comments and sharing of opinions. I did not mean to whine or complain I just was a little irked at the fact that by liking a comment I could be incarcerated for a few hours in a near afternoon.