Understanding the

Student Progress Report

What is the difference between percentile and percent correct?

A percentile ranking represents how well a student performs compared to other students in a nationwide norm sample for their grade. A student scoring at the 35th percentile scored as well as, or better than, 35 percent of the students in the same grade in the norm group. It also means that 65 percent of the students exceeded this score.

A common mistake is for people to think that this means that the student got 35 percent of the items correct. Percentile is not related to the percent of correct answers a student gets on a test.

The percentile is not a good method for measuring growth in students. Students who achieve typical growth will remain at approximately the same percentile score over time.

What does MAP Growth measure?

MAP results are provided as a numerical RIT score. This score is used to measure a student’s achievement level at different times of the school year and compute growth. Think of this like marking height on a growth chart. You can tell how tall your child is at various points in time and how much they have grown between one time and another.


What is a RIT score?

After each MAP test, students receive a RIT score. Think of the score as a student’s height. The score reflects the student’s academic knowledge, skills, and abilities like inches reflect height. The RIT (Rasch Unit) scale is a stable, equal-interval scale, like feet and inches. Equal-interval means that a change of 10 RIT points indicates the same thing regardless of whether a student is at the top, bottom, or middle of the scale, and a RIT score has the same meaning regardless of grade level or age of the student. Scores over time can be compared to tell how much growth a student has made, similar to measuring height with a ruler.

What is RIT?