It's rude to disturb others in the classroom.
Cary is confused about something in his texbook.
Cary wants help from his teacher.
Cary puts his hand up and waits until the teacher is free.
Cary sees the teacher helping another student so starts yelling for her to come help him instead.
The teacher comes over and answers Cary's question.
The teacher is annoyed with Cary's outburst and sends him to the principal's office.