I have no idea what the precedent is, but my guess is the 30% is a firm number. Otherwise, it would be unmanageable with people saying, "we'll 34% is pretty close," or "36% is close." Hope I'm wrong and he gets the opportunity to complete his Senior season, I just doubt it.
It is 30% with all percentages rounding up. Exhibitions and/or scrimmages do not count. So for our purposes we played 37 games with 30% being 11.1. That means that Ric can have played in 12 games to qualify. Unfortunately, he played in 13 (14 if you count Senior night).