I'm in need of some help here. First off, this is my first year teaching high school art and things are going pretty well in all periods except one. The class is a painting class (I have four periods of painting). Two days in a row we have had a major fiasco around the sink. I have 41 students in this class, and only one sink. I have some large buckets with water in them to help alleviate the sink shortage. The first day someone turned on the water full blast, sprayed water all over and flooded the floor. The next day someone thought it was funny to turn the faucet around, and again flood the floor. I told the class that if we had any more trouble with the sink, we would not be painting any more and would use colored pencils. The next day, someone flung paint across the room. At that point I said no more paint. Now I have a lot of angry students who enjoyed using the paint and are being punished because of the actions of others. I was going to allow some students to use paint today, the ones I know can handle it, but on entering the room, someone took a palette off the counter (from the previous period that still had useable paint on it) and dumped it on the floor. There was no way it was an accident based on where the palette was being kept. I realized that I can't have paint anywhere! What frustrates me is that I can never catch the blasted culprit! It is a very rowdy group of kids, and it could be any of about 10. I am not having problems like this in any of my other periods (knock on wood!). This is a very immature group. What should I do? There are some wonderful students in this class who deserve to be able to paint, and I feel bad for them that they are stuck in this class. Help!!!!