I have used this behavior system with Pre-k & Kindergarten students for the past four years. It is very simple and easy to understand for the little ones. I usually place the visuals on a bulletin board and use cloths-pins with a photo or name of each students. The pins are moved according to student behavior. The best part about this behavior system is that students have the opportunity to track their behavior throughout the day. It's also easy for parents to understand and use at home!