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Test prep

Prep books, courses and practice tests for the SAT, ACT, AP, GRE, GMAT, LSAT, MCAT and professional exams.

SAT & ACTCollege admission tests
Graduate examsGRE, GMAT, LSAT and MCAT
Professional examsLicensing and certification
Test prep

SAT & ACT

ComparisonSAT vs ACT
College admission tests

How the digital SAT and the ACT compare on sections, timing, scoring and calculators, how to decide between them, and which prep resources to use.