The document provides tips for teachers at different English proficiency levels. It discusses focusing on student needs, establishing classroom rules, using techniques like drilling and grouping to build basic skills, and facilitating autonomy at intermediate levels. For advanced students, it recommends challenging academic language and internet resources. The teacher's role is to help students self-teach and prepare for professional contexts. Discipline tips include creating a visible code of conduct, rewarding positive behavior, and dealing with issues individually. The document stresses evaluating real-world effectiveness and maintaining work-life balance.