All aspirants who have completed their 12th grade are eligible to take up GRE exam anytime during their academic. The GRE is mainly used for admission into graduate level, post graduate level as well as doctoral programs. Admission to various courses will be on the basis of the marks in the concerned qualifying exams as well. All citizens are free to write the GRE. Any student irrespective of past academic performance is eligible to apply for the GRE to gain entrance into a Masters course.