It depends a bit which license type your student will access during the course.
A) If you ask them to buy there own student license, you need to have your own academic license.
B) If they access a campus license (Total Academic/Student Headcount), or a large concurrent license, then there is no problem at all, as you can access this too.
C) In case you have a classroom license, there might be something like a free instructor copy/license. Please contact MathWorks Sales.