When this is set to Yes, each page of the lesson displays the student's score and the number of possible points so far.

If a lesson is not linear and if it branches, the path that each student takes through the lesson can change. This means that each student can have the chance to earn a different number of points. So, in a branching lesson, the total number of points possible for the entire lesson is not meaningful because the lesson can be different for different students. For example, you may create a lesson with many branches and pages and then require the student to earn at least 200 points on that lesson. This will encourage the student to explore the lesson and try different branches until they have earned the required points.