Catastrophe definition, a sudden and widespread disaster: the catastrophe of war. See more.
1 Total Time: The computer-delivered GRE takes 3 hours and 45 minutes for the average student.  Experts recommend sitting for the GRE exam one year prior to entering graduate school. This allows for ample study time and the option to retake it if desired.
At that time, you can choose to send scores from your Most Recent, All or Any test administration from your reportable history. See Ordering Additional Score Reports. For individuals testing on or after July 1, 2016, GRE test scores are valid for five years after your test administration date.