<p>The national percentiles that were released with this year’s test results are the juniors who took the test in the previous year. It says this in the score report. The percentiles don’t reflect this year’s test takers, but they do give some insight into last year’s record jumps. Read the sidebar on page 2 of the 2013 report. It’s explained there. Also, if you look at the 2010 report, the percentiles are for that test (2010). I’m not sure why they started using percentiles based on previous years. That was not always the case.</p>