Did you know that 65% of the math questions on the SAT allow a calculator? CollegeBoard recommends students bring a calculator with which they are familiar with the SAT to avoid confusion and wasted time trying to figure out a new calculator. This tip will increase SAT scores and reduce any test day stress. A list of approved calculators can be found on the CollegeBoard website, and in general most scientific and graphing calculators are allowed on the SAT, PSAT, and AP exams. iPads, cell phones, and smartwatches cannot be used on the SAT, PSAT, or AP exams.