Kentucky Homeschool Standardized Testing: Your Options Compared

Kentucky doesn't require homeschoolers to take any standardized tests. But when you've been educating at home for a year and you want to know whether your child is on track with national peers — or when you're thinking about college, scholarships, or re-enrollment — voluntary testing becomes practical.

The problem is that the homeschool testing market has a lot of options and the differences between them aren't obvious from the names alone. Here's a direct comparison of the four tests most commonly used by Kentucky homeschool families, what each one actually measures, and how to decide which one fits your situation.

California Achievement Test (CAT)

The CAT is the most popular choice among Kentucky homeschoolers and for good reason: parents can administer it at home without any professional credentials. You purchase the test, set aside a few testing sessions, and score it yourself. No scheduling around a professional's availability, no travel to a testing center.

The CAT measures reading, language arts, and mathematics. Results are reported as grade-equivalent scores and national percentile ranks — so you can see directly whether your child is performing above, at, or below grade level compared to a normed national sample.

Providers: Seton Testing Services and several other online vendors sell CAT administrations. Pricing is typically in the $30–$50 range per student.

Best for: Families who want regular benchmarking without logistical complexity. Particularly practical for families in rural or Appalachian Kentucky where finding a credentialed test administrator nearby is difficult.

Limitation: The CAT is a solid norm-referenced test but it doesn't provide the same depth of diagnostic subscores as some other options. If you're trying to identify specific learning gaps, the Iowa Assessments or Woodcock-Johnson give more detailed information.

Iowa Assessments (Formerly ITBS)

The Iowa Assessments (Iowa Tests of Basic Skills) have a long track record and are among the most widely recognized norm-referenced tests in the US. They cover reading, language arts, math, science, and social studies, and produce detailed subscores that can help identify specific areas of strength or weakness.

Historically, Iowa Assessments required a test administrator holding at least a bachelor's degree, which made them less accessible for home administration. Online administration options have evolved this requirement somewhat, but you'll want to verify current administrator requirements with your chosen provider before purchasing.

Providers: BJU Press Testing and Seton Testing Services offer Iowa Assessments. Some local evaluators and co-ops also administer them.

Best for: Families who want more detailed diagnostic data and are comfortable coordinating with an external administrator if required. Also a strong choice when documentation for re-enrollment is needed, since the Iowa Assessments are broadly recognized by both public and private schools.

Limitation: More administratively complex than the CAT if in-person administration is required. Scheduling can be a barrier.

Stanford Achievement Test (SAT10)

The Stanford Achievement Test 10th Edition covers similar content areas to the Iowa Assessments and is similarly norm-referenced against a national sample. Its most notable feature for homeschool families is the option to administer the test in an untimed format — a meaningful accommodation for children who struggle with timed testing conditions.

The SAT10 measures reading, language arts, math, science, spelling, and listening (at lower grade levels). Like the Iowa Assessments, it requires varying levels of administrator credentials depending on the provider.

Providers: Seton Testing Services offers the SAT10 through qualified evaluators.

Best for: Families with children who experience test anxiety or processing speed differences and would benefit from untimed testing. Also a solid alternative when the CAT's abbreviated subject coverage isn't sufficient.

Limitation: Less self-administerable than the CAT. You'll typically need to work through a testing service.

Woodcock-Johnson III Tests of Achievement

The Woodcock-Johnson III (WJ-III) occupies a different category from the three tests above. It's a clinical instrument — not a group-administered normed test but an individually administered battery that measures cognitive abilities and academic achievement in detail.

The WJ-III must be administered by a qualified professional, typically someone with a graduate degree in psychology, special education, curriculum and instruction, or a related field. It cannot be self-administered or parent-administered under any circumstances.

What you get in return for that complexity is a psychoeducational profile significantly more detailed than any group test can provide: discrepancy analyses, processing strengths and weaknesses, precise achievement benchmarks in areas like phonological awareness, reading fluency, math calculation, and written expression.

Providers: Educational therapists, school psychologists, and some learning specialists. You can locate WJ-III administrators in Kentucky through the Kentucky Association of Private School Educators (KAPSE) or by contacting your statewide homeschool support network.

Best for: Families who have specific concerns about learning differences, are seeking documentation for a formal diagnosis, or want a comprehensive academic profile for a student preparing for a specialized college or professional program.

Limitation: Cost is significantly higher than group-administered tests — typically $200–$600 or more for a full evaluation. It's not a routine benchmarking tool.

How to Track Assessments Across Years

Whichever test you choose, test results only become genuinely useful when you keep them organized alongside the rest of your academic records. A single test score in isolation tells you less than a score viewed alongside curriculum completed, skills demonstrated, and the prior year's results.

For the Kentucky scholarship report required under KRS 159.040, having a structured record that integrates assessment results with ongoing documentation of instruction gives you a much stronger file than test scores alone — and it makes any DPP inquiry straightforward to respond to.

The Kentucky Portfolio & Assessment Templates at /us/kentucky/portfolio/ include assessment tracking sheets and skills checklists that tie test results to curriculum progress, so your records build logically year over year.

Choosing the Right Test

A simple way to decide:

• Need easy, no-credential home administration? Start with the CAT.
• Want detailed subscores for curriculum planning? Look at the Iowa Assessments.
• Have a child who struggles with timed testing? Consider the SAT10 with untimed administration.
• Have concerns about learning differences or need a formal evaluation? The Woodcock-Johnson is the right tool — but get it done by a qualified professional.

For most Kentucky homeschool families doing annual benchmarking, the CAT is the default answer. It's accessible, affordable, self-administerable, and produces the national percentile data you need to answer the "are we on track?" question clearly.

See more United States homeschool guides →