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NNAT Scores: Understand Test Results


Scoring for NNAT and NNAT3 relies on your child’s age, not grade, ensuring a unique assessment. This age-based scoring system accounts for development and cognitive growth, ultimately benefiting both advanced and younger children.

The age-based scoring system provides a more equitable assessment, allowing children from various backgrounds and developmental timelines to showcase their nonverbal reasoning skills effectively. It eliminates potential biases associated with grade-level scoring, ensuring that all children have a fair chance to demonstrate their abilities.

Parents should be aware of this unique scoring method when interpreting their child’s results. It highlights the importance of focusing on age-appropriate preparation rather than simply aligning with grade-level expectations. Understanding this scoring system is crucial. It will help you support your child’s preparation and ensure they have the necessary skills for success on the NNAT and NNAT3 tests.

Steps Used to Calculate the NNAT Score:

  • Raw Score. This represents the total number of correctly answered questions; for example, a 25/48 means your child answered 25 questions correctly.
  • Naglieri Ability Index (NAI). The Raw Score undergoes conversion into the Naglieri Ability Index (NAI). This index compares results to peers within a three-month age range. The NAI has a maximum score of 160, with an average of 100. Additionally, normalized NAI scores demonstrate that 68% of general education students score between 84 and 116.
  • 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.

Each district has unique criteria for gifted program admission. There isn’t a standard NNAT or NNAT3 score for qualification. Therefore, contacting your child’s school for specific details is advisable.Detailed score reports should arrive in the mail approximately two months after your child’s tested.

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