Duke has a system of categories he uses to classify the students he counsels. Discuss Duke's system, how it evolves, and what it reveals about Duke and his motives and personality

The Dell Duke Counseling System was the system by which Dell categorized the students that were sent to him for counseling. His original system included the categories of misfits, oddballs, lone wolves, and weirdoes. After he met Willow he added a category for genius. After he met Pattie, he added the category of dictator. For himself, as he began to notice he was changing for the better, he added the classification of mutant.