The relationship between students and teachers is less formal in the USA (1) than in many other countries. American students do not stand up (2)When their teacher enters the room. Students are generally encouraged to ask questions during class, to stop in the teacher’s office for extra help, and to phone if they are absent. Most teachers allow students to enter class late or leave early if necessary. (3) Despite the lack of formality, students are still expected to be polite to their teachers and fellow classmates.