According to my mentor, one of the hardest things about teaching is having effective classroom management. With new and different types of students entering her classroom, it's difficult to reuse the same strategies over and over again because not all students are the same. What worked with the students in previous years, might not necessarily work for students in the current year. Classroom management needs a lot of research and I've learned that the best way to see if your management strategies work is through trial and error.