The General GRE is a standardized exam that measures analytical writing, verbal, and quantitative skills. A recent GRE score is a required component of an application to most graduate schools in the United States. While the old paper-based GRE is still offered in some select locations, the GRE is most often administered as a Computer Adaptive Test (CAT). CATPreps GRE simulator assists prospective graduate school applicants in their GRE preparation by offering realistic practice sessions designed to indicate their levels of preparedness and accurately predict their scores on the actual exam.