This is a quick post describing one small reason (of many) of why I like SBG.
The setup for the gradebook is as follows: each student gets 2 shots (in class) to quiz on each topic, the grade is out of 4. They get one chance right after the end of the unit, and one a week later. If they improve from try 1 to try 2, then their most recent score is doubled (so the final grade is out of 8); otherwise add the two grades together. So here is a screenshot of my gradebook. The last row is the class averages. The “1” is the first attempt, “2” is the second, and “3” is any assessments taken afterschool.
Notice how on nearly every topic, the grade goes up from assessment 1 to assessment 2. In some cases it goes up significantly (concepts 16 and 17). Sometimes there is a concept where the grade goes down (concept 13) because it was tough, but the students stay after review and then reassess successfully: 2.8 -> 2.4 -> 3.4.