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.
If you take the GRE on paper or a GRE Subject Test, it will take longer for you to receive your scores. It will take up to five weeks for you and the schools you requested reports be sent to to receive your official test scores (there are no unofficial scores for paper-based GREs).