Although this article has some outdated date information in it, it is a good discussion of the use of the PSAT/NMSQT (Preliminary Scholastic Aptitude Test and National Merit Scholarship Qualifying Test) for homeschoolers, especially those who are interested in qualifying for certain scholarships.

Seton provides affordable, nationally standardized testing, including ability and achievement tests, practice tests, and test prep materials for homeschoolers, private schools, and home school groups. Testing services and materials are available for grades K-12. Tests include the Stanford 10 Online, CAT E-Survey, IOWA Form E, and TerraNova 2/CAT 6. Ordering is easy and you will get test results returned within two weeks. 

Assessment is authentic when we directly examine student performance on worthy intellectual tasks. Traditional assessment, by contract, relies on indirect or proxy 'items'--efficient, simplistic substitutes from which we think valid inferences can be made about the student's performance at those valued challenges.

Offering the California Achievement Test (C.A.T./5), specifically the C.A.T./5 Complete Battery and the C.A.T./5 Survey. They also offer TerraNova CTBS and TerraNova 2 (CAT/6) for homeschools, private schools, or organized groups. Test results are sent directly to you, helping you understand your student’s academic standing.

PLATO Learning, Inc. delivers just-in-time online assessments that are tied directly to state and provincial standards. Their courseware includes thousands of hours of basic to advanced level instructional content for K-adult learners. They provide web based assessments that assist in placement, progress monitoring, and accountability requirements with diagnostic and prescriptive tests, simulated high-stakes tests, lesson progress tests, standards-based tests, and cumulative tests.

Crosspointe Educational Services is a mail order service that offers state-approved Survey and Complete Battery California Achievement Tests (CAT) in an effort to meet your testing needs. Their flexibility allows you your choice of testing dates and the opportunity to administer the test in the comfort of your own home; or you may choose to test with your support group or choose someone outside your home school to test your student.

Bayside School Services offers do-it-yourself standardized achievement tests, available all year. Bayside gives you original publisher materials plus genuine CTB scoring reports, including free practice tests for all grades where available. Test prices include shipping, handling, scoring and all practice tests. Special pricing available for group orders.

Colleges will accept either the SAT or ACT. So which should you take? It's all about the numbers. Some students end up scoring substantially higher on the SAT; others do better on the ACT. The Princeton Review Assessment (PRA) is designed to help you determine which test is better fit with your abilities.

The College Board is a not-for-profit membership association whose mission is to connect students to college success and opportunity. Founded in 1900, the association is composed of more than 4,700 schools, colleges, universities, and other educational organizations. Each year, the College Board serves over three and a half million students and their parents, 23,000 high schools, and 3,500 colleges through major programs and services in college admissions, guidance, assessment, financial aid, enrollment, and teaching and learning. Among its best-known programs are the SAT, the PSAT/NMSQT®, and the Advanced Placement Program®(AP).

Family Learning Organization offers standardized tests for homeschooling families. Through their Educational Assessment & Testing Service, tests may be obtained by parents to administer to their homeschooled children. Their services include standardized achievement tests (California Achievement Test, Fifth Edition), review of parent-administered assessments by a certified teacher, toll-free telephone answers to your questions about administering tests and interpreting results, and computerized score printouts for tests including Percentile Rankings, Grade Equivalencies, Stanine Scores and Scaled Scores, where applicable.

Educational Testing Services (ETS) is an organization that provides a range of products and services, including research, test administration, test scoring, and more. This organization develops and administers AP, GRE, and SAT tests, among others.

Catforms Testing Service offers the 1970 California Achievement Tests with their own answer sheets and computer scoring. Key features of this system include graphical results in color, cumulative comparisons from year to year, and a detailed analysis of strengths and weaknesses in each area of the test. In addition to the original 1970 norms, they also have their own norms, the Catforms Percentiles, which are updated annually from the tests they have on file. The Catforms Percentiles are not a national norm, but are useful in comparing your students' performance with others from Christian schools and home schools today.

John Holt's article in which he lists questions that should be asked of school districts' testing policies.

Trust Tutoring offers an Evaluation of Basic Skills, a standardized test of reading, writing, and math skills for ages 3-18.

The Princeton Review offers personalized private tutoring, test prep, and admission products and services to help students knock down barriers and achieve their academic goals. Search for schools and careers, find test preparation courses, get information on scholarships, and more. Covered tests include: ACT, AP, PSAT, SAT, SAT Subjects, TOEFL, ISEE, MCAT, DAT, OAT, LSAT, GRE, GMAT, CFA, and USMLE.