Well, they are telling this to VCs afterall...

Recently on a John Oliver segment, Oliver was speculating on how Trump University received 98% excellent approval ratings from current students. Turns out that the students were asked to give feedback while still enrolled in the course, meaning that giving a bad review could negatively influence their grade or relationship with the teachers, and thus the students were motivated to give more positive answers than they otherwise might have.

I wonder if founders giving answers here had names attached to their answers or if they were anonymous at submission-time.

That's how every university course evaluation I've ever done has worked. Though they say data is shielded from the instructor until after final grades are submitted. Not sure if that applies to the Trump thing.