Eating off the floor

The music teacher told me that during the assembly Toby was picking up stuff off the floor and eating it. He continued to do it in her classroom after the assembly. Then yesterday he was spitting on kids. We had a spitting issue last week and I said anyone who spits again would go see the principal because it is a health issue. So, he went to see the principal. This was probably a good thing because it got some wheels in motion. He talked to Mom, who ended up in tears. (The poor women is just being worn down. She is a wonderful mom and volunteer. I have really enjoyed working with her this year.) Then I caught her at the end of the day and we talked for a moment. She has been asking me to track his behavior and I have tried, but I don't feel I have a good way of communicating the difference I see or what has not changed. There is so much going on in my room that it is hard to pinpoint when the medication is wearing off. He seems to have times of more focus, but still chats a lot and gets our of his seat. I tried to explain to both her and the principal that he is still misbehaving, but it seems to be more controlled misbehavior and not complete and constant chaos. My principal and I met and he said he has all these things he is wondering about and that the conversation with the mom gave him all kinds of questions. He has done a lot of study on behavior and so he is curious as to the different causes of the behaviors. I wish I could remember all the things he said about it because he had a lot of good questions. We decided that we would just pick on behavior to focus on (getting out of his seat). He will get so many chips on his desk and every time he gets out of his seat he has to put a chip in a cup. If he has a certain number of chips by the end of the week he will get a Popsicle with the principal. Each week or two we will try to reduce the number of chips he starts with. This morning he only got out of his seat 3 - 4 times. This afternoon it was constant. When we came back from library it took him a long time to get started, but then he seemed fairly focused on his assignment. It did last long and he stood up with his paper, started heading towards his friend across the room, paused at the coat closet, turned a half circle, saw me watching him and went to sit back down. He then turned his paper in with 1/2 of it incomplete. I wish I knew what to do.