PrepTest 84 is the LSAT that was administered in June 2018 and includes an answer key and writing sample prompt. Practicing with previously administered LSATs is one of the best ways to prepare for the test. The Official LSAT PrepTests are published by the Law School Admission Council (LSAC). the organization that produces and administers the LSAT. For practice on administered LSATs at an unbelievable price, you can’t beat the official LSAT PrepTests.