The Law School Admission Test (LSAT) is a standardized test that is required to gain admission to law schools in the United States, Canada, and some other countries. It tests the skills that are necessary for a student to succeed in first-year law school. The LSAT takes half a day to write and covers a number of skills including reasoning, reading comprehension, and writing. Law schools use LSAT scores as one of several factors to assess applicants.