[dmitriid_y]

There are usually "student council" programs that give a handful of elected students a regular audience with administrators, but most of these programs don't have any teeth.

Graduate student council programs in particular are often built as a compromise to prevent the students from forming an organization with greater efficacy.

Anecdotally, some PIs I know have had to directly contend with rising organization among students and handed out a raise and a bonus to their labs.