The LSAT is a "beatable" test and certain highly specialized LSAT companies have perfected techniques to mastering the LSAT. Look for small class sizes catered to your skill level and experienced instructors.  

The John Marshall Law School has an average LSAT score of 153.
University of Chicago Law School: 171
Northwestern Law School: 169
Loyola University Chicago School of Law 161

LSAT classes available in the Chicago / Evanston area AtlasLSAT 1212 E. 59th St Chicago, IL 60637 Real teachers who scored in the 99th percentile on the official LSAT. They have extensive teaching experience and personalities to keep you engaged. Attend a free LSAT Workshop & Class Preview on campus. Atlas LSAT pays their teachers $100/hr - up to 4x other companies. Limited class size (18 students max).  Diagramming techniques to tackle the toughest Logic Games. Three strategy guides provide effective tools to attack the LSAT.  All books use actual LSAT questions, including 20 full-length official LSAT exams. Prep packages from $350 to $1350. Continue to AtlasLSAT Powerscore LSAT Course 525 S. State Street Chicago Illinois, 60605 1710 Orrington Avenue Evanston Illinois, 60201 The Powerscore Course includes 64 hours of classroom time and techniques from the famed Powerscore Logic Games Bible. Instructor Hotline / Email Assistance / Online Student Center access with test scoring application 99th+ percentile instructors 28 practice tests. Use of real LSAT's in class, homework, and all practice tests No-strings-attached repeat policy within a year. $475 (weekend) / $1195 (64-hour course) Continue to Powerscore LSAT Prep LSAT Online Classes from Knewton Knewton is relatively new, but the teachers and researchers are some of the most experienced in the industry. Multiple 180-scorers, the former Kaplan LSAT product director, and the former research director at the Law School Admissions Council are just a few members of the all-star team behind the only LSAT program on the market that guarantees a minimum 5-pt increase or your Money-back. Knewton’s online-only model leverages technology to improve students' scores and to significantly drive down the cost of preparing for the LSAT. Course registration $890  36 hours of live and on-demand online classes with a team of Master Teachers and TAs  All 5948 released LSAT questions online, with a custom quiz generator and detailed explanations  Money-Back guarantee that your score will improve at least 5 points  12-month membership with access to all classes, tests, and other resources Still unsure? Try a 7-day free trial of the course, including PrepTest 57 (June 2009) with instant online scoring and full explanations.