NNAT Scores: Understand Test Results
The NNAT and NNAT3 tests are scored based on your child’s age (not grade level, even though that’s how these tests are typically administered).
Steps Used to Calculate the NNAT Score:
- Raw Score. This is total number of questions answered correctly; since 48 questions are asked on the NNAT3, a 25/48 indicates your child correctly answered 25 questions.
- Naglieri Ability Index (NAI). After the Raw Score is determined, it’s converted to a normalized standard score known as the Naglieri Ability Index (NAI) by comparing your child’s results against scores earned by other students born within a three-month age range. The highest possible NAI score is 160 and an average score is 100; however, NAI scores are normalized so that 68% of general education students score within the 84-116 range.
- Percentile Rank (PR). School districts use this number to compare each student’s individual test performance against a nationwide sampling of students born within the same three-month age range. A percentile rank of 80 means that child’s score was higher than 80% of students tested nationwide, and the PR ranges from 1-99.
Since each district uses a different set of criteria to determine eligibility for admission into their gifted and talented programs, there is no standard NNAT or NNAT3 score required to qualify; instead, we recommend contacting your child’s school for more information. Detailed score reports should arrive in the mail approximately two months after your child’s tested.
Want to try us out? Sign up for a free account today and get 100 practice questions.