Assignments being marked as complete when they are not done
I began using Duolingo with my Italian classes last year but this year I have numerous issues with tracking the students' work. Many times students work is being marked as complete on both my end and their's when in fact they have not completed the individual lessons. Today I noticed that one student was listed as having missed the assignment when I actually saw him complete it in class. When I clicked on his assignment it showed there were 8 lessons which he did not complete but the assignment for everyone else in the class showed there was only 1 lesson to complete. These issues are rendering Duolingo unreliable to use as a graded assignment.