Danielle,
Raw score to scaled score conversions vary from exam to exam. In other words, the precise scaled score that corresponds to a raw score will depend on how the curve is calculated on a given LSAT.
We have illustrated two such conversions on the following page:
https://www.powerscore.com/lsat/help/scale.cfm
Notice that for both example LSATs, to achieve a median score of 152, you would need to earn a raw score of around 60, which would mean you answered three fifths of the questions correctly.
This median score of 152 applies to all administered LSATs. The median score at schools you are applying to will vary. Some schools may have a lower median score. Others have higher median scores.
To know what a good score is for you, you will wish to obtain some information from the schools you're applying to. You will want to know the 25th and 75th percentile score for admitted applicants. These numbers will give you a range to shoot for. You will also want to know the median score. You need the same information for undergraduate GPAs of admitted applicants. Once you have this information, you can judge how strong a candidate you will be for a given school.
Thus, the short answer to your question is a good score is the score you need to be admitted to the school of your choice!
If you are shooting for a median 152 score on the LSAT, as mentioned you would need to score roughly three fifths of the questions correctly. You can earn these points by scoring evenly across all four sections, or, for instance, if you excel at games, you could ace the games section and earn fewer points on reading comp and logical reasoning.
If you haven't already, you should take a practice test to see how you're doing right now. Then you can set some goals for yourself and get going with a strong practice plan.
Consider using our Free Practice LSAT Scoring Tool at the link below to get an in-depth breakdown of your performance, strengths, and weaknesses.
http://students.powerscore.com/self-study/index.cfm
I hope this helps!