Answer:
He would use the labelling theory to show the danger of stereotypes
Step-by-step explanation:
According to Ray Rist (and others) the labels teachers give to their students are often based on first impression and preconceived ideas (stereotypes) teachers have about students. Related to this is the self-fulfilling prophecy that can lead to mistakenly belief that, as a student, you´re good/bad, depending on the ideas the teacher has and acting as such.