I have been challenged with a simalar situation recently and found that if i move my disruptive student away from their comfort zone the outcome turns out for the better. For example in the cooking lab days when a particular group of students work together the quality of the food lacks structure and usually never gets turned in on time even with my guidance along the way. While on the flip side if i separate them into another group their performance and knowledge of cooking is stronger and they understand the importance of teamwork and productivity. I do believe that the other classmates will not put up with their belief system and together as a team will make things happen. Glenn