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.

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.

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.

Offers the Iowa Tests of Basic Skills (ITBS), the Stanford Achievement Test, the Cognitive Abilities Test (CogAT), and the Otis-Lennon School Ability Test (OLSAT). There are some specific guidelines for administering these tests, including requirements in some cases for a bachelor's degree, teacher certification, and/or special training in test administration. Also offered are test support products designed to help your child achieve higher test scores.

Established in 1955, National Merit Scholarship Corporation (NMSC) is an independent, not-for-profit organization that operates without government assistance. NMSC conducts the National Merit® Scholarship Program, an annual academic competition for recognition and college undergraduate scholarships.

The PASS Test was developed specifically for home schoolers. It has certain similarities to other achievement tests in that it estimates student achievement in the subjects of reading, language, and math. But is has important differences. It introduces four major improvements over most achievement tests presently available. First, it was designed for parents to administer at home. This can greatly reduce the stress level of testing. Second, it is untimed, which helps students to relax. Third, the student's approximate achievement level within his or her grade is initially identified by use of a brief accompanying placement test. This assigns each child to a test level where he or she is more likely to succeed, and it also allows for shorter tests. Finally, testing results show overall achievement as well as performance in each subject. The test is standardized and children's scores are compared with both national and home-schooling populations. This does not mean that the test is nationally normed, but that the scores are equated to those of public school students taking one of the nationally-normed tests. The states of Alaska, New York, and North Carolina have officially approved the PASS Test for purposes of state reporting. In other states which require testing, you should check with your local school district to make sure it meets their requirements.

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

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.

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.

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.

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

The National Center for Fair & Open Testing (FairTest) works to end the misuses and flaws of standardized testing and to ensure that evaluation of students, teachers and schools is fair, open, valid and educationally beneficial. They place special emphasis on eliminating the racial, class, gender, and cultural barriers to equal opportunity posed by standardized tests, and preventing their damage to the quality of education. Based on Goals and Principles, they provide information, technical assistance and advocacy on a broad range of testing concerns, focusing on three areas: K-12, university admissions, and employment tests. FairTest publishes a quarterly newsletter, The Examiner, plus a full catalog of materials on both K- 12 and university testing to aid teachers, administrators, students, parents and researchers. They also have numerous fact sheets available on standardized testing and alternative assessment.

ACT vs SAT: which test is a better fit for your student? Students may take whichever test they prefer (assuming there are available testing locations for both tests). If you’re not sure which test your child would prefer, consider the key differences between the ACT and SAT. Some students find that the ACT caters to their strengths more so than the SAT, and vice versa. Need a quick side-by-side comparison of the tests? Check out this ACT vs SAT Comparison Chart.

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).

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.