Is it normal for senior three teachers to tell jokes?

Almost, my high school classmate is. She is lively and enthusiastic with boys. As a result, the teacher suspected her puppy love as soon as she saw her getting closer and closer to the boys, called her parents, called her parents as soon as she saw her, and finally made her parents numb. Actually, I don't blame the teacher. There is a lot of pressure to go to high school, especially in senior three. Suspicion is normal. It's good to know.