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We know every trick in the book—because we wrote the book.

Knewton's exclusive computerized adaptive testing (CAT) algorithm was developed by the same testing scientists who designed the tests used by ETS and LSAC.

David Kuntz is the Vice President of Research at Knewton. He has been involved in every aspect of the large-scale educational assessment business over the span of a twenty-year career, holding senior positions at both LSAC and ETS. Among many other activities, he created the first automated test assembly algorithm and system for the current LSAT, the first web-based computer-adaptive test delivery system, the first online AP practice program using real AP graders, and the first large-scale web-based portfolio scoring and management system. He has been awarded four assessment-related patents, with a fifth patent pending.

Len Swanson, one of the principal developers of Knewton's test prep programs, is widely considered the father of computerized adaptive testing. He served as executive director of technology for ETS and developed the computerized versions of the Graduate Record Examination (GRE), the Graduate Management Admissions Test (GMAT), the Test of English as a Foreign Language (TOEFL), and the Praxis Assessment Series for teacher licensure. He holds more patents in adaptive testing than anyone else who has ever lived.

The GMAT is an adaptive test, so all Knewton practice questions are adaptive; you will become thoroughly accustomed to answering questions in that format.

* Adaptive testing is currently used on the GMAT and GRE; you get one question at a time and each subsequent question adapts to your performance depending on how you answered previous questions.