There are three main types of action research: individual research focused on a single teacher's classroom, collaborative research involving two or more teachers, and college-wide research addressing issues across an entire institution. Action research can focus on various areas including learners, teachers, methodology, evaluation, curriculum, administration, and parental cooperation. Teachers play a key role in action research by identifying problems, diagnosing them thoroughly, implementing remedial measures, finding solutions, evaluating outcomes, and taking follow-up action. The document then provides examples of action research problems that could be addressed by groups focusing on issues like mobile phone policy, dress codes, counseling services, drug addiction, and technology in the classroom.