Piedmont Education Services offers the Iowa Tests of Basic Skills (ITBS) and the Woodcock-Johnson III Tests of Achievement (WJ-III), along with test prep materials.

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.

Many parents arrive in the world of gifted education with a report full of tests results, supposedly defining their child as "gifted." But more often than not, parents have more questions than answers upon receiving those test results. And just as often, the short answers from the psychologist, the school, the teachers, and other parents do more to confuse than clarify.

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.

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.

Future School online learning systems support your entire family in both the classroom and the home using only qualified teachers to ensure its educational services. They offer tutoring students in the home, classroom and after school facilities, providing both face-to-face, telephone and online assistance in the two core areas of literacy and numeracy. Future School has also many years experience in the development of Basic Skill Tests in mathematics and English covering years 3, 5, and 7, including the materials, delivery, marking, psychometrics and reporting to Education Departments, schools, and parents.

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.

Triangle Education Assessments offers the Iowa Tests and Woodcock-Johnson III Tests of Achievement.

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.

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. 

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

As home schooling grows as a movement, there is increasing politics from anti-home school forces to try to interfere with or legislatively control home schoolers. This has come to include legislative attempts to force home school students to take standardized tests along with public school students. But mandatory testing doesn't work in public schools, and it won't work for home schoolers.

This is the statement of Mark August of the Tricounty Home Educators Association regarding testing of homeschooled students.

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.

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.

Offers BRIGANCE Screening and Inventories products. Designed for use in elementary and middle schools, the CIBS-R is a valuable resource for programs serving students with special needs, and continues to be indispensable in IEP development and program planning.