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One of the most prominent changes that will accompany the transition to the digital format is the SAT’s implementation of a computerized adaptive testing (CAT) model. CAT models are already utilized on a number of tests (GMAT, MAP, etc.). As opposed to tests like the GMAT that use a question-by-question adaptation whereby the difficulty of the each question is adjusted based on a per-question basis, the SAT will be using a section-wide adaptation whereby one’s performance on the first module as a whole (27 questions for reading and grammar and 22 for math) will determine the difficulty of the second module.

There are two tracks for the two modules in each section: easy and hard. The difference in difficulty level between the two tracks is noticeable. For instance, the breakdown by question difficulty for an easy math module on one of the digital tests is 13 easy questions, 8 medium questions, and 1 hard question, whereas the breakdown for a hard math module is 8 easy questions, 11 medium questions, and 3 hard questions. While it will differ on each test and section, students who score roughly above 60% on module 1 for reading and writing will get the hard module 2, and students who score roughly above 50% on module 1 for math will get the hard module 2.