The best way to correct Mark's outbursts is by utilizing ClassDojo and setting up a rewards system. As the teacher awards and deducts points from Mark on a daily basis, he will understand that his outbursts have a consequence as he works towards an agreed upon reward (10 minutes of music, HW pass, candy, etc.). After progress is made each week, the teacher can change the number of days within each segment for the reward, continuing to challenge Mark to improve himself on a daily basis.