Online classes: More than half my students got W or F

Teaching asynchronous online classes at a CC. I made it more difficult to use AI, which may have also made the assignments more difficult.

Started with a total of 62 students. By the end of the semester, 11 withdrew and 23 got Fs. There were 4 D grades and then a roughly equal number of A B and C grades.

Most of the F students gave up and stopped submitting work. A few continued to submit failing grade work. A bunch got 0 grades for using AI. I'm sure some of them passed by using AI when I couldn't prove it.

We will see if the chair expresses concern. My course uses a standard textbook and has pretty standard assignments. I am contemplating reducing the workload for them and myself next semester.