The average score on the assignment report for a student is the average of the scores they received on each individual problem. For example on a 2 question assignment, if they received a 33% on problem 1, and a 66% on problem 2, their assignment score would be 49.5%.
A class score if the average of each student's assignment average.
The score a student earns on each problem depends on the number of attempts or hints used, and whether they eventually got the right answer on their own. See the chart below:
If a problem set includes open response question, these will not be factored into the student's total score until they have been manually scored by the teacher. The teacher has the option to score on a four point scale and that will carry over to the assignment report and automatically factor into the student (and class) overall score.