With the new format of the LSAT containing just one Logical Reasoning section, the scoring on older practice tests with two LR sections overweights the importance of LR, making it hard to know if the score you see on a practice test is an accurate predictor of your test-day performance. To provide practice tests as representative as possible of your test-day experience, we updated all the exams on the website to have three graded sections (one each of LR, LG, and RC), plus one random experimental section. That meant we needed to make decisions on how to adjust the scoring conversion of those tests. We’re confident that the result is the best possible indicator of your actual LSAT skills and performance.
There are a few risks with adjusting score curves to reflect a flex exam; we were careful to mitigate them all.
First, we selected only those exams for which performance on the 2 LR sections in the original test was similar. That prevented a skew in the scoring from counting an LR section that didn’t represent the average difficulty of the source test. Then, we selected the LR section to be scored, and we calculated the number of questions in the new test (74-76 questions, based on the exam). We used this to make initial percentage-based adjustments to the curve, basing scoring out of around 75 questions instead of 100.
Then, we made by-hand adjustments to ensure we were approximating original scoring as closely as possible. When we had a tie-breaker moment, we referred back to both the original exam score, and the one released Flex exam curve, to determine how we should make those minute adjustments. What we wound up with is a scoring system we're confident is the best in approximating scoring on the LSAT’s new format.