A norm-referenced test (NRT) compares a student's performance to a group of peers. It shows how well a student did relative to others, not if they mastered specific skills.
Research from the National Home Education Research Institute (NHERI) shows that homeschooled students typically score 15 to 25 percentile points higher than public school students on standardized academic achievement tests. A peer-reviewed study published in Peabody Journal of Education found that homeschooled children are typically well-adjusted socially and score above average on measures of social skills, emotional development, and daily living skills (Richard Medlin, 2013).
What is a norm-referenced test?
A norm-referenced test, or NRT, compares your child's performance to a group of other students in the same grade. It doesn't check if your child knows everything they should. Instead, it answers: How does this student stack up against their peers? The results show percentile scores. For example, scoring in the 75th percentile means your child did better than 75% of students in that group. NRTs help you see where your child fits on the achievement scale, but they don't reveal specific skills your child has mastered.
How nrts differ from criterion-referenced tests
It's important to know how NRTs differ from criterion-referenced tests (CRTs). CRTs check if your child has mastered certain learning standards, like state tests or chapter exams. You either pass or you don't. With NRTs, everyone gets a score based on how they perform compared to others. A student can’t ‘fail’ an NRT; they just rank higher or lower than their peers. NRTs are great for placement, identifying giftedness, and tracking progress, while CRTs help with lesson planning and evaluating curriculum.
Homeschool-specific considerations
For homeschool families, picking the right test often depends on state rules. The Classic Learning Test is popular since parents can give it at home without special training—grades 3-6 are even untimed! The P.A.S.S. test is unique because it compares scores against both homeschoolers and public school students. Before choosing a test, check if your state accepts it for compliance, when the norming data was collected (old data can inflate scores), and whether your child does better with timed or untimed tests.
The bottom line
Norm-referenced tests have a clear purpose: to show where your child stands compared to their peers. They’re useful for meeting state testing needs, qualifying for gifted programs, and checking college readiness. However, NRTs don't tell you what your child knows or what they need to work on—that's where criterion-referenced tests or portfolio reviews come in. Many homeschool families use NRTs for compliance but rely on other methods for teaching decisions.
