He might have gotten into college and never wanted to leave Destiny Islands in the first place, totally ruining the plot of Kingdom Hearts.
If SORA passed then he wouldn't have ended up in a roadside ditch, so high on fruit he hallucinated about talking ducks and dogish goofs.
If SORA passed, he wouldn't have to share with Roxas or Ventus. He could be his own man and not have to worry about their cases of utter depression.