For those of you that listened to my MAATA lecture in 2021, here is the resource I promised you. Just download the excel document and begin entering your scores-it will do all the work to calculate At Risk scores and to place each score into the appropriate quadrant. As an added bonus, it will apply the better corrective hierarchy priorities as well. Enjoy!
IF you want more information on this topic, here is the original write up that led to the development of the MAATA lecture.