I use this tool on a daily basis! It coordinates with the popular clip charts (you can find many on TPT!). This document includes all school months (August-June) of blank calendars. At the bottom of each month there is a legend to remind parents of what each color means. At the beginning of each month, I print the master and write in the dates corresponding to that year. I also write in special dates (holidays, early release, class parties, field trips, etc.) I then run the number of copies I need (1/student). Once I've done this, I pass out the calendars and have the kids write their name at the top and color in the legend at the bottom.
At the end of each day, you can have the kids color in that day's corresponding square with where their clip was at the end of the day, or do it yourself, depending on the grade/age. I have found that this tool is the easiest way to track behaviors in my classroom.