A student scribbled the following on my bathroom wall. As in INSIDE MY CLASSROOM, bathroom wall.

it says "A-- FUCKED STE--" (names changed to protect either the innocent or the stupid).
When you're in a classroom of 29 students, it pretty much limits WHO could've writ the graffito down to about, well, a MAX of 29 and a MIN of about 4. Maybe it's GOOD they're so fucking DUMB, because it makes it easier to catch them??