Last 10 Curves on the Last 10 LSATs: What a (Non-) Difference a Curve Makes

by Mary Richter Sep 23, 2014

In case you haven’t heard, getting a 170 on the LSAT (or a 180 for that matter) doesn’t always mean missing the same number of questions. Due to a phenomenon commonly referred to as the LSAT curve, there can be a swing as large as five or so points from test to test when it comes to what constitutes a 170 (just choosing that particular score to illustrate). Take the last 10 released LSATs (excluding February, as it’s not released):

ISN’T IT OBVIOUS? TAKE DECEMBER, RIGHT? You can miss 14 and get a 170, while June and October tests are often so harsh that you can only miss 10 to get the same score!

Not so fast. Spoiler alert: It doesn’t actually matter; you can’t game your score by choosing in which season you will take the test to strategize around the curve in this way (maybe Nate Silver could, but if you’re Nate Silver, don’t go to law school).

The reason why, in short, is that this curve reflects a response by LSAC to measured difficulty of a particular exam—an easier curve, in other words, actually means more difficult.

So how is difficulty measured? It’s measured based on how many people are getting how many questions right across three years of data. This measurement gives LSAC a “percentile” for each numerical score on a given LSAT—if you score a 170, and that’s in the 97th percentile, it means you performed better than 97 percent of other people taking the test, but not on the same day as you. Technically, you’re “competing” against everyone who took the test in the three years prior.

All of this is to say, when you first learn about the LSAT curve variation, don’t get excited and decide to choose a test date based on it. Choose a test date based on factors like when you are going to apply and what gives you sufficient time to prepare.

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