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.
Your official scores for each of the three sections will be available 10-15 days after you take the GRE, and the schools you sent score reports to will also receive your scores at this time. If you took the paper-based GRE or a GRE Subject Test, it will take up to five weeks for you and the schools you indicated to receive your official scores.