In the absence of internal motivation, students will still study for exams, but will put little additional effort into a course.
So an absolutely brutal means of motivating these students is to give 10 exams and keep only the lowest 2 (or drop the lowest and keep the next two up).
They would study because every exam would count. They couldn’t afford to slip up.
It’s the sort of thing that I wish I didn’t even have to think about. In an ideal world, all students would be motivated…
That is an ingenius idea, if a little harsh. 🙂