- 4Tests.com
 - Provides free practice questions to a variety of standardized exams including the SAT, ACT, GED, TOEFL, and more. - A M Professional Tutoring Services
- US based instructors offer live online tutoring for all subjects including math, science, reading, writing, and languages (from K - College level). A M Professional Tutoring specialises in standardized tests and college and university entrance exams such as the SAT and ACT.
- Bell Curves Test Preparation
- Provides academic and test preparation services and self-study resources for students to attend top U.S. universities.
- Cambridge Educational Services
- Offers classroom materials for use in school entrance and assessment test preparation classes.
- CanPrep
- Offers online test preparation programmes for the GMAT, GRE, and TOEFL.
 City Mutual Education
- Online provider of learning resources for vocational studies, from GNVQ to degree level.- ExamWeb
- Provides online preparation and review courses for school admission and professional certifications.
- Justin Craig Education
- Revision course specialists providing tuition for students working for GCSE and A-Levels.
- Kaplan Practice Test
- Offers free online practice tests for the SAT, ACT, LSAT, MCAT, GRE, and more.
- Kaplan Test Prep
- Offers testing preparation services for school admission and professional licensing exams, including GRE, MCAT, SAT, PSAT, and more.
- Knewton
- Prepare for the GMAT with live online course taught by master instructors and featuring adaptive tests from the developer of the actual GMAT CAT.
- Manhattan Review Global
- Multi-national boutique firm focusing on GMAT preparation, consulting services for business school admissions, and executive coaching programmes for young business professionals.
- Morrison Media LLC
- Offers a wide range of test preparation courses and study guides for certification exams.
- Morrison Media: FlashcardSecrets
- Provides flashcard review materials for SAT, ACT, GRE, MCAT, GMAT, and more.
- Princeton Review
- Explore schools and careers, prepare for standardized tests and entrance exams, research scholarships and financial aid options and more, all in one centralized location.
- ProfessorsTutor.com
- Uses workbooks and lesson plans to help parents, teachers, and K-12 students prepare for standardized tests, TAKS, required by the No Child Left Behind Act.
- Study Guide Zone
- Offers test preparation materials for the GRE, ACT, SAT, MCAT, and GMAT including study tips information.
- Sylvan Learning: Test Preparation
- Sylvan offering personalised state test preparation programmes and SAT/ACT test prep courses to help prepare students to perform at their highest abilities.
- Test Prep Practice
- Offers strategies, tips, tutorials, and test preparation for the GRE, GMAT, SAT, ACT, and LSAT.
- Test Prep Review
- Offers test preparation and practice tests for the ACT, SAT, GRE, GMAT, MCAT, LSAT, TOEFL, and many others.
- Triumph Learning
- K-12 student texts, software, and professional development resources.
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