Have you looked at
http://www.redandgreenchoices.com? It's a great website that has visual cues for behavior choices and the best part, it puts the student in charge of making choices. I would also suggest that you look at your students individual IEP's and see if any have a Behavior Intervention Plan (BIP). I would document and collect data DAILY for these students too. You are working with students with ED (emotional disturbance) and they need to be in charge of their own behavior. If you give them choices, they can't use the excuse "he/she made me do it, I wasn't in control of myself, ect!" I would also suggest the following book: Difficult to Teach, Difficult to Reach by Sylvia Rockwell. This is an EXCELLENT resource for teachers of students with severe behavior problems. I hope these suggestions are helpful.
Troy in Downey, Ca
AspieTeacher (I embrace my autism)