[Lakeside]

I think ElizabethJoy is right that this particular battle is lost. Short of having an administrator join you for every class, I think your goal now is to survive until the end of the year without a major incident.

And I wholeheartedly agree with the others about limiting materials if they won't clean up! For this particular class, I'd put on a video about a famous artist, or a video tour of a museum. (If you're not allowed to show videos, print articles for them to read.)

Either way, have a worksheet with questions they have to answer, and collect it it for a grade! (Tell them this up front.)

I'm unclear why 8th graders are still being picked up by other teachers, but it does really suck that they won't back you up. I'm usually in elementary here, but if kids line up without cleaning up, their homeroom teacher is just as likely as me to send them back to their seats!