I started a new incentive program at the beginning of this month.  In addition to giving out a sticker at the end of the day, each student has the chance to earn stickers on their chart.   Each student has a chart with 20 squares.  Each time I feel that the student is doing a good job of following the rules, I will award him/her a sticker on the chart.  Once the chart is filled with 20 stickers, he/she will get to choose a prize from the prize box.  Once the chart is completed, I will start a new chart.  I usually give one sticker in the middle of the day and/or at the end of the day.

So far, this has been working great.  All the students have been trying hard to follow the rules to get stickers on their chart.