I'm sure this will be an unpopular opinion, but just like junior employees, I think university students should clock in at 9am and finish working at 5pm.
I think they would really benefit learning how to work a full day and develop some work life balance.
I actually like this idea in theory. Except, it wouldn't allow for students to find flexible part-time work.
As an example, I was a university student in Canada ~15 years ago. I lived with my parents, driving 30 minutes each way to attend classes. I had car insurance, gas, a cell phone, tuition, parking and books to pay. Tuition was costing 6000$ a year over 5 years. Being in humanities, I chose my own course schedule. I would often have classes 8 a.m. to 2 p.m. Monday through Thursday. I would work nights and weekends 25-33.5 hours most weeks..Most part-time employment worked around student hours and allowed some flexibility. Once I graduated and had a full-time salary position, I had much more free time and struggled to not feel lonely in filling up that time.