What grade is he in?
DS7 (second grade) did Performance Series and was at around 3050 for math but the highest level he did on Khan Academy was around 5th-6th grade level so I am really not sure how he was able to show mastery on so many high-level skills. Most kids don't get to the 3000's until they hit around 9th grade. He is at around 2850 for reading. All I know is that that my DS scores 99th percentile for both math and reading for second grade, and that doesn't really mean that much (how MUCH above 99th percentile?) but there is a quartile chart you can look at to get a better idea of where he falls in terms of comparing to other grade levels.
http://www.tcss.net/cms/lib3/AL0100...%20Placement%20Indicators%20-%202013.pdfI wish I had a better chart because it only goes up to 75th percentile. Even though DS's score is so high, he is NOT at a 10th grade level and should not be accelerated that much. The school accelerated him to 6th grade math and that seems to be about right for now. The test just means that he is guessing as well as the 10th graders.
In terms of the scores with 3 numbers in a row, those are the confidence intervals so I think you want to look at the numbers in the middle. If you compare these numbers, you can see if anything is particularly low or high compared to the others. But take it with a grain of salt. In the fall, DS's fiction score was several hundred points higher than nonfiction, and in the winter the scores reversed and his nonfiction score went up about 500 points even though all he was reading was fiction in between tests. In the case of your DS, it looks like he struggled the most with Data Analysis and Long Passages.
