There are a few things to keep in mind when looking at the MAP data bars. While each bar is the same size, the horizontal position of each bar varies based on the number of students in that group that are above or below the Norm Grade Level Mean RIT. In the example below, the bar is skewed to the right. This means that the majority of the students performed above the Norm Grade Level Mean RIT.
In the below example, about half of the students performed below the Norm and half the students performed above the Norm.
Each bar is broken up into sections that represent the number of students in that group that are a part of that quintile. In the below example, 42% of the students performed between the 80-100th percentile and 38% were in the 61-80th percentile.
Click on the quintile sections to see the students in those section on the right-hand table.