Tip #1: Establish classroom rules immediately and enforce them consistently.
Establish rules on the first day of class, and always follow through on the specified rewards for achievement and consequences for misbehavior. If you allow a student to get away with misbehavior without consequence even once, you’ve opened the door to future misbehavior and negotiation of rules. This is particularly important at the beginning of the year, when you’re building your students’ trust in you as their teacher.