Educational Testing Service (ETS) is a non-profit organization headquartered in Princeton, New Jersey, USA. Founded in 1947, ETS is one of the world’s largest private educational testing and assessment organizations. It develops and administers standardized tests such as the TOEFL, GRE, TOEIC, and Praxis Series, which are widely used for academic admissions, professional certification, and language proficiency evaluation. ETS is known for its research-driven approach to assessment and education policy, striving to ensure fairness and accessibility in testing worldwide.