It is not acceptable to yell at your minor students.
James' students had been passing notes and playing on their cell phones instead of listening to him.
James wants his students to pay attention.
James makes the students put their phones face down on their desks and reads the confiscated notes out loud.
James raises his voice and tells his students they'll all be lucky to get jobs at Burger King.
The students are more attentive and answer more of James' questions.
A few of James' students start crying and many of them complain to their parents.