New weird elevators at school

Date: 5/13/2018

First of all the dream started out with me forgetting about a class I registered for, which has happened in a past dream, except this time I only forgot for the first week instead of the whole semester Anyways I left my backpack and camera in a locker but was nervous about it because I couldn’t get it to lock I went to take the elevator to the lower floor and it seemed weird, moved slowly, and the doors were see-through which was very anxiety inducing When I later went to get back on they had security checks, and apparently you now had to verify your identity as a student in order to use the elevator. There were machines that would scan your card and metal detectors around as well. I couldn’t get back up to my floor because my backpack with my school ID was in the locker, assuming it hadn’t gotten stolen