I feel like there is not nearly enough information here to make any judgments. I mean what does "Naked photos" mean? We are just missing so many details to make a judgment. Did she consent to a topless photo? Was it a full nude engaging in a sexual act taken without her consent? Those two situations should be treated with different degrees of punishment, right? But from what we know it could be either of those two things.
Don't get me wrong, these kids should be punished. Detention is fine. Hell, Juvi for a month might be fine. But I think it should be more up to the parents to make their child's life a living hell and not to have something that will be on their record for the rest of their life.
I don't care who you are, when you were a teen, chances are you've done some pretty stupid sh*t. Did you learn from it and not do it again? Did you mature eventually? The answer to that question is (hopefully) a yes. So then why are these kids, who did something stupid, being punished for the rest of their lives?