How to use the score improvement rate calculator
Listing a run of test scores makes it obvious that things moved, but not how much. Five points gained is a different story at 60 than it is at 90, and eyeballing the column does not settle it. Enter one score per line and this page reports the point change and the rate of change between each pair of sittings, the total change from the first sitting, and which interval rose and fell the most.
Two figures carry the page. The change is this score minus the previous score, and the rate is change ÷ previous score × 100. The total change compares only the last score with the first, while the average is the mean of the interval rates. An interval where nothing moved reads 0.00% with no minus sign attached. Labels are optional: enter scores alone and each line is numbered in order.
Some limits. If the first score is zero there is nothing to divide by, so no percentage can be reported; a zero in the middle removes only the interval that follows it. Tests differ in difficulty, so a change in raw score is not the same as a change in ability. This page does not fit a trend line or forecast the next sitting; it reports the rates between the sittings you gave it, and scaled scores and percentile ranks are out of scope.
Frequently Asked Questions
The same five points mean different things: 50 to 55 is a 10% rise, while 90 to 95 is about 5.6%. As scores climb, an identical gain is a smaller share of where you started, so the two figures have to be read together.
No. The page calculates the change and the rate of change between the sittings you entered. It does not fit a trend line or project anything forward.
The change reads 0 points and the rate reads 0.00% with no minus sign in front of it. If no interval rose at all, the page says there was no rise.