This is a wonderful way to communicate with your students' parents about their child's behavior in class. I have the kids draw their happy faces with a crayon based on their behavior at the end of the day. If they got in trouble, I ask them to bring it to me at the end of the day for me to draw the sad face. This way I can add the number that corresponds with the comment I want to communicate with the parent. I like to file the calendars of the students that have behavior issues for my records. Filing them also helps if I have to conference with the parents to show the pattern of behavior in class. I hope this calendar is helpful to you, and you enjoy them as much as I do.