Iowa Test, Stanford, and CAT for Homeschoolers in South Carolina

South Carolina's Option 3 homeschool framework does not require standardized testing. That is one of the reasons so many families choose it. But the absence of a mandate does not mean testing has no value — and if you are enrolled under Option 2 (SCAIHS) or Option 1 (district oversight), testing is required and the choice of which test to use still matters.

The three most widely used nationally normed standardized tests among South Carolina homeschoolers are the Iowa Assessments, the Stanford Achievement Test (SAT-10), and the California Achievement Test (CAT). Each has meaningful differences in format, timing, and what it measures.

Iowa Assessments (ITBS) in South Carolina

The Iowa Assessments — commonly called the ITBS or Iowa Test — are among the most rigorous nationally normed assessments available for K–12 students. They measure performance across reading, language arts, mathematics, science, and social studies, generating composite scores and grade-equivalent rankings based on a national norming sample.

The 2024 national norms are the most recently updated, making current Iowa scores a reliable benchmark against contemporary grade-level peers. This currency matters: a test normed 15 years ago will give you less accurate relative performance data than one updated recently.

Why South Carolina families use the Iowa Test:

• SCAIHS accepts Iowa Assessments for their mandatory grades 3–11 testing requirement
• The composite score and grade-equivalent report gives a clear picture of where a student stands relative to national peers across multiple subjects simultaneously
• Strong performance on the Iowa Assessments can serve as supporting evidence in a portfolio for Option 3 families who want external validation of their child's progress

Test administration options: The Iowa Assessments can be ordered through vendors such as BJU Press. Depending on qualifications, parents can administer the test at home. Group testing sessions are also hosted at regional University of South Carolina campuses.

Stanford Achievement Test (SAT-10) in South Carolina

The Stanford Achievement Test, Tenth Edition (SAT-10) is popular among South Carolina homeschoolers who want comprehensive academic assessment without the pressure of a timed, in-person test environment. The SAT-10 is available in both paper-based and online formats, and the online version is untimed — meaning students can work through sections at their own pace, which reduces test anxiety and produces results that more accurately reflect actual academic knowledge rather than time-management performance.

The SAT-10 covers reading, mathematics, language arts, science, and social studies at all grade levels. Because it is untimed and available online, it is frequently recommended for students who struggle in traditional timed testing situations or who have learning differences that make standardized test environments challenging.

SCAIHS accepts the Stanford Achievement Test for its annual testing requirement. For Option 3 families, SAT-10 results can be included in the portfolio and cited in the semiannual progress report as objective evidence of academic achievement.

California Achievement Test (CAT) in South Carolina

The California Achievement Test (CAT) is widely considered the most accessible of the three tests for South Carolina homeschool families. It is available in untimed, online format through vendors like Academic Excellence, and the ordering process is straightforward. The relatively low administrative complexity makes it a natural first choice for families who are testing voluntarily and want a low-stress experience.

The CAT measures reading, language arts, and mathematics. Compared to the Iowa Assessments and SAT-10, it covers fewer subject areas — science and social studies are not assessed. For families primarily interested in core skills benchmarking, this is sufficient. For families seeking a comprehensive multi-subject assessment, the Iowa or Stanford tests provide broader coverage.

SCAIHS also accepts the CAT for its grades 3–11 testing requirement.

How to Choose the Right Test

The right test depends on what you need the results to do:

Where to Order and How to Administer

All three tests are available from vendors that serve homeschool families. BJU Press is a commonly used source for Iowa Assessments and Stanford Achievement Tests. Academic Excellence handles CAT ordering and administration. Regional USC campuses host group testing sessions for families who prefer a supervised environment or do not meet home proctoring qualifications.

Parent qualifications for home administration vary by test vendor. Review the specific requirements before ordering — some tests require the administering parent to hold a bachelor's degree or above.

Using Test Results in Your SC Portfolio

If your family is under Option 3 and you choose to test voluntarily, the score report becomes useful documentation. Place the official score report in the portfolio under the relevant academic year. In your semiannual progress report, you can reference the test results as part of your assessment of the student's academic standing.

Test scores do not replace the portfolio of work samples — they supplement it. A strong score report alongside well-curated work samples creates a more complete picture of academic progress than either alone.

For families building this documentation system from scratch, the South Carolina Portfolio & Assessment Templates include assessment tracking pages where standardized test scores can be logged and cross-referenced with the rest of the portfolio, as well as semiannual progress report templates that align with what South Carolina Option 3 associations require.

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