An achievement test checks what your child has learned in subjects like reading and math. It compares their knowledge to national standards, showing how they rank among peers.
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 an achievement test?
An achievement test measures what your child has learned in subjects like reading, math, language arts, science, and social studies. Unlike aptitude tests that guess future learning, achievement tests focus on what your child knows now. They compare scores to a big group of kids in the same grade, giving percentile rankings. For homeschoolers, these tests help meet state requirements and show that your teaching is effective.
State requirements for homeschool testing
Whether you need achievement testing depends on your state. For example, North Carolina requires annual standardized testing, while Virginia allows testing or evaluation by a licensed teacher. Some states have no testing rules at all. Typically, states say tests must be 'nationally normed,' but they might not name specific tests. Some require certified test administrators, while others let parents administer tests. Always check your state's rules before buying a test—what works in North Carolina may not work in Virginia.
Understanding your child's scores
Achievement test results come with different score types. The percentile rank shows how your child compares to same-grade students nationally. For instance, a 75th percentile means they did better than 75% of their peers. Grade equivalent scores show the grade level your child is performing at, but these can be misleading. Stanine scores simplify results into a 1-9 scale. For compliance, most states just want to see that your child isn't falling behind—not necessarily that they're at the top percentile.
Making the most of test results
Achievement tests can highlight patterns worth looking into. If your child struggles in certain areas, it might be time to adjust your curriculum. A child performing below their potential could indicate learning differences. On the other hand, strong scores can confirm that your homeschooling approach is effective, which is useful when family questions your choices. Remember, a single test is just a snapshot. Homeschooled kids may perform poorly in subjects you haven't focused on yet but excel in areas you've covered—that's often by design.
The bottom line
Achievement tests serve two main purposes for homeschoolers: meeting state requirements and providing benchmarks for academic progress. They show what your child knows compared to national norms and help you make informed educational choices. Knowing your state's specific rules helps you pick the right test. Scores can point out areas to consider, but they only tell part of the story. Don't let test results dictate your entire curriculum—use them as one of many tools.
