I know my kids’ school monitored companies’ behavior as well their students’ behavior while they were recruiting/interviewing. There were strict guidelines on how long a company needed to give candidates to respond to an offer. If a company were to violate the guidelines then they would be barred from recruiting on campus. The companies were also prevented from inviting candidates off campus for meet and greet (or wine and dine) until after a certain date. I remember the year D1 was interviewing, she was invited to visit a well known IB over a weekend before The Date. Both she and the company were warned by the career center that they may be in violation of the school’s guidelines.
Both of my kids had to go through an online training given by the career center before they were allowed online to submit resumes. One thing they were not allowed to do was to accept multiple offers.