[quote=@Nightmare Bunny]
Sooooooooo… what happens when Meredith finds the culprits? Detention for everyone even peripherally involved? XD
[/quote]

Hrm...

depends. Probably not much actually. She's actually rather lenient in her punishments xD
Since no one got seriously hurt - like, more than a broken bone or two, she's probably going to let them off with a 

'don't let me catch you fighting again or you're gonna help me with teacher stuff xD'

Of course, that also depends on how much trouble they give her.