The Law School Admission Test or LSAT is a standardized, multiple-choice exam consisting of five 35-minute sections. These sections include multiple-choice questions on reading comprehension, analytical reasoning and logical reasoning skills. The test is scored on a scale of 120-180. Only four out of the five sections are scored (although you do not know during the test which four sections are scored). In addition, the test administers a writing sample that does not contribute to your score on the 120-180 scale.
Your LSAT score is a major determining factor in whether you get accepted into law school and which schools accept you. It is not advisable to take the LSAT for practice - instead you should complete your preparation and practice before you attempt the official LSAT. Law schools have varying policies on how they view multiple attempts at the LSAT.
The LSAT is administered four times a year. For official test dates, registration, location of test centers and additional information, visit http://lsac.org/LSAT/about-the-lsat.asp.