Make their course completion contingent upon doing so? That’s a bit draconian of course, but you could also provide something positive to juice the deal instead. Incentives 101.
in my school they pay students to tutor. it was actually quite competitive. A lot of tutors I knew went on to get really good jobs right after graduation.
it works out really well for the student. instead of working a regular job during the year you get to do something that benefits your career, you build a relationship with your professors and it pays more than if you were working at the local grocery store.
> All graduate students are required to serve as a Teaching Assistant in at least one course for academic credit before the Ph.D. degree is awarded. Appropriate courses may be undergraduate, graduate, or medical, but must be in the Biological Sciences Division (exceptions may be made for students in the Biophysical Sciences program).