@SATSmadness. I hope it wasn’t your DC’s school who gave the impression that reapplication is disapproved of, as it is, as pp have said, utter rot. Perhaps confusing with deferred applications?
Both my boys’ schools send quite a few to Oxbridge but, slightly to some parents’ disappointment once they get close enough to the process to spot it, a quarter to a third of successes are post a level candidates, and as such almost all reapplicants.
DS1 is another who I don’t think would come around again