Positive Behavior Rewards

I was placed in a kindergarten and have loved it. We have 21 students in our class and they are very well behaved for the most part and eager to learn. I can't believe how fast it's going! I already know I am going to miss this class when it's over. One thing I think is really awesome is that the whole school participates in a positive behavior reward system by giving out 'Colt Cash' when they see a student or entire class doing something good. My teacher has given some to me to hand out to students when I see them doing a positive thing and the kids get really excited when they get one. Then at the end of the month each classroom puts their colt cash in a drawing and one student from each class wins a little prize. This really gives students incentive to go above and beyond when it comes to helping a student/teacher out or just asking their overall best.