Back in the Dark Ages, when I was in junior high, we were required to take a drawing class. Okay, we were drawing on cave walls, and my art didn't survive the millenia. One of my biggest frustrations was that I CAN"T DRAW. I distinctly remember a cartooning assignment where the best I could produce was stick figures while some of my classmates were able to produce drawings that actually looked like something.
So, where was Pixton when I needed it? Pixton is a website that allows you to create completely customizable comics and they actually look like what they are supposed to be. For my art class, this would have been perfect!
Pixton would great in a cartooning class, but because it supports 10 languages, it would also be a terrific tool for language teachers, as well.
One word of caution: I would be very careful about just letting kids surf this site. There are several artists doing cartoons about suicide and death. I haven't looked, but there are likely some other topics being done that might not be classroom friendly, too.