Pretty much this. Most universities have a second and third shift but it’s usually reserved for janitorial departments and a skeleton crew maintenance. I used to be a night shift plumber for a university and we only had 3 plumbers and 3 electricians on site for the entire D1 state school campus. Most places opt for on call late at night. Really the infrastructure isn’t there for full tilt 24 hr educational support, much less maintenance and support staff.