This really depends on both how and how long you prepared for your first attempt. If you signed up for an 8-10 week course right before your LSAT, then you can absolutely improve your score by continuing to prep and retaking the LSAT. Generally speaking, the longer you prepare for the LSAT, the higher you will score. This of course assumes that you are preparing with the correct strategies but the LSAT is learnable. What makes the LSAT unique in terms of standardized exams is that it is not a subject based exam. You are not being asked to memorize and regurgitate on the LSAT. You are being asked to change the way you think and changing the way you think takes longer.