According to the teacher who posted the photos, he teaches at a high school for "at-risk" students and gives them paper to draw and tag during class.
He tapes down pieces of scratch paper to each desk and leaves them there until the student fills it up.
Check out that awesome Finn from Adventure Time.
Or this completely spot-on Butt-Head.
The scratch paper, he says, cuts down on the graffiti
"At-risk" students are high schoolers who are at risk of not graduating, many are students who fail a lot of classes, have criminal records, or girls that returned to school after becoming pregnant.
The flower on this one was added in later by another student in the class.
