Now I understand.Non-graded courses have two grades: pass and fail. To pass, students simply have to do everything - we do not evaluate how well something is done, simply that it is indeed done.
However, around half the students fail to achieve that and get a fail. As the course is non-graded, the budget says the feedback is in the grade, so we don't spend any time typing the things students didn't do, we simply expect them to be able to review their work and the task descriptions and find the parts they missed for themselves. Many of the complaints have been about 'lack of feedback'.
So it's a very easy course to pass. But it's also a very easy course to fail. Language proficiency is key. If people can't (or won't) read the tasks they inevitably overlook some of them. Even the most patient of 'friends/mates/cousin who took the course last year' can't talk a non-reader through ALL the tasks in the course.
The course is core in the IT programs and elective in the innovation and entrepreneurship business program. 90+% of the cohort are IT students. So there's very little self-selection into the course in the way that American uni students might be used to. More's the pity in my view. I would love it if students had a wider range of courses to choose from in their degrees.