Principals, get out the office and get into the classrooms if you want to improve your campus classroom instruction and student performance. Instructional leaders fix discipline issues with sound instructional practices. Safety is a by-product of the sound research-based practices implemented to produce a learning environment conducive for learning. You'll find that students are less willing to disrupt class when they believe the principal is always in the hallways heading to observe classes.
Need an effective process for observation and feedback? Call NIET.
NIET has a proven research-based and evidence based system which concludes that when classroom observations and feedback is given adequately and frequently, student achievement increases dramatically. In fact, my first major school turnaround project was successful because we used the NIET system for evaluation.