Agree that out if sight is best. As a holdover from the LA Olympics decades prior, my S had a safe in his dorm closet freshman year and his room mate had one too. I don’t believe they or anyone in their dorm ever locked said safes–just kept things out of sight when not in use.
Those weekly pill containers could hold anything, including vitamins and supplements. If no one knows what the student has or is taking any meds, that’s best and much less tempting. Agree that only having a one week supply at a time in the container makes sense.
I believe if the meds are stolen, leaving the student/patient short, the provider and insurer can be appealed to for an exception to refill sooner than usual.