GRE professional examination (GREsubject). There are two kinds of GRE: ordinary and sub. It's usually Cowper. However, some specific majors will ask you to take the GRE exam in their major, considering that General's grades are not enough to explain your academic and language ability in this major. For example, GRECS is the GRE test required by computerscience. It doesn't necessarily mean that all schools require points for CS majors, and the requirements of each school are different.