We use the clip chart system to manage behavior (students move their clip up or down a colored chart depending on their behavior). Students end each day on a color. If students ended the day on a sad color, I will glue one of these Behavior Alerts into their agenda for their parents to sign. This lets parents know their child had to move their clip down and their signature lets me know they are aware of their child's clip move.
The size is perfect for gluing into our student's agendas!