The Graduate Record Examination (GRE) is a standardized test that is an admissions requirement for most graduate schools in the United States. Created and administered by the Educational Testing Service (ETS) in 1949, the exam aims to measure verbal reasoning, quantitative reasoning, analytical writing, and critical thinking skills that have been acquired over a long period of time and that are not entirely based on any specific field of study outside of the GRE itself. The GRE General Test is offered as a computer-based exam. In the graduate school admissions process, the level of emphasis that is placed upon GRE scores varies widely between schools and between departments within schools. The importance of a GRE score can range from being a mere admission formality to an important selection factor.