I'm a current senior undergraduate.
I did a summer internship last year that I received through my college (through OCR) and received a return offer to join the company full-time (it's within retail, and the pay isn't super great and I wouldn't get a performance bonus for at least 3 years) - let's call the company "X". I received the full-time return offer in late August 2017, and I had until the end of October 2017 to accept. I couldn't find a better offer by October so I accepted the job.
I recently just got a job offer with a boutique consulting firm, let's call them "Y", and the pay is much better. I also got this job through my school's OCR. I haven't accepted the offer yet.
I'm concerned that if I accept this new offer from company Y and renege my old offer from company X, then X will contact my school's recruiting team/OCR and inform them about it. And since the new offer I got from Y is also through OCR, is it possible for my school to tell Y to rescind their offer from me?