The Graduate Record Examinations, commonly known as GRE tests, are standardized tests designed to measure your overall academic readiness for graduate schools. You might compare graduate-level GRE tests to bachelor’s-level SAT exams. There is a general GRE test as well as subject level tests that help assess a person’s mastery of a particular field, including chemistry, mathematics, physics, and psychology. Not all universities require GRE test scores in order for a student to be admitted into a university’s degree program. Walden University does not require GRE tests as a condition for acceptance.