It's wrong to not care about your education.
Jacob has a late final exam that's at the same time as when his friends are going to beach week.
Jacob wants to be able to go to beach week with everyone else.
Jacob talked to the professor to see if he could take the exam at an earlier date.
Jacob skips the exam to go to the beach, assuming that his grades leading up to the final would be enough to pass.
Jacob gets a lower grade than he would have if he had more time to study, but he passes the class.
Jacob didn't realize that getting a 0 on the final resulted in an automatic F in the class, so he had to retake it.