Perfect Score is a simple yet powerful teacher grade book program for Mac OS X. Perfect Score provides all the essentials of a gradebook, including a seating chart with student image support (to help the occassional substitute teacher), a color coded attendance chart, and a score table. In addition, Perfect Score has built in support for curves, category weightings, custom grade systems, attendance penalties, and drag and drop support - so you can drag assignments between documents instead of creating the same assignment over and over again for three different classes.