The Official Guide to the TOEFL iBT with CD-ROM, Third Edition
Educational Testing Service (ETS), based in Princeton, New Jersey, is a private, nonprofit organization devoted to educational measurement and research, primarily through testing. ETS develops and administers millions of achievement tests each year in the United States and 180 other countries. These include the TOEFL®, GRE®, Praxis®, and other standardized tests.