This is a great resource for students who are in many classrooms throughout the day, for which you have general education teachers who have a hard time implementing interventions with high fidelity or whom you'd just rather not put more work on their caseload! This works well for kiddos who are not highly motivated by grades, school consequences, or teacher praise and for which any pre-existing, school-wide behavioral systems have failed. I use it for 5 tough middle school boys who don't care about much else and have completely bought in because they have a say in what they are working toward! Some of their favorites include Takis (spicy chips), free time instead of our morning meeting, and choosing from the prize box (which consists of pencils, candy, and other cheap knick-knacks from the dollar store).
We use Kickboard at our school, which allows me to see which teachers, if any, gave students points (+) for good things throughout the day or marks (-) for things they need to improve on. This allows me to easily designate a point value for each subject throughout the day. I start them with 5 points for each class and they can gain or lose points based on their performance throughout the week. Each morning, I distribute their trackers, so they can see how they are doing toward their weekly goal and on Thursday mornings, I let them know how many points they will need to get that day to earn on Friday (which is why my tracker goes from Friday-Thursday, so they can get their reward before they leave for the weekend). Alternatively, if you don't have kickboard, you can send the tracker with the students from class to class, or do a check-in with staff at the end of each day.
I love these because they are very low maintenance to keep up with, are easy to understand, and I can keep them as good behavioral data to inform decisions at IEP meetings and track progress throughout the year.