Online Test Prep Trusted by Educators, Parents and Students Around the World


Keep Up in School

Access over 1,000 lessons and 5,000 practice problems


Prepare for Tests

Our test prep courses have lessons and practice problems created specifically for each test


Smart Assessment

Behind the scenes, we analyze your progress to give you better feedback when preparing for a test


Help up to Graduation

We have lessons and test prep available to help you from Pre-Algebra to SAT


Used by students across the USA & in 24 other countries

Get access to ALL of the following:


Test Prep Courses:


Math Practice & Tutorials:






    “Following the lessons on Caddell Prep helped my son get ready for the SHSAT and get accepted to Staten Island Tech.”
    -M. Gonzalez (parent)

    “The lessons were great. My daughter received a scholarship to her first-choice school and was accepted to all three.”
    Jearn Kearns (parent)

    “I liked how the lessons were presented. They were easy to follow. I also liked that there were practice problems after each lesson, so I could practice what I just learned. I got into Brooklyn Tech, thanks to the Caddell Prep.”
    -Henry Liu (student)

    “I’ve already recommended Caddell Prep to other parents”
    -Joann Hotaling (parent)


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How Our Online Test Prep Works

Prepare on Your Computer, Tablet or Phone



Mobile Optimized

Take your test prep with you on the go. Our website is optimized to function on newer phones and tablets. Our platform is web-based and works in the major browsers, so you can access it from anywhere with internet service.

Let’s be serious. Students are busy and on the move. Sometimes students are able to study at a desk or table, but many times they need to make the most of their free time wherever they are. Being able to transition from desktop to laptop to tablet to phone makes it much easier to study.


FAQs About our Online Test Prep

Who should sign up for this?
Our online test prep and math tutorials can be used by anyone, but typically fall into one of these categories:

How close is your material to the actual tests?
Extremely close. We model our practice questions and tests off of previous tests or the samples provided by the associated organization.

How many times will I be charged?
You will be charged every month until you cancel. You can cancel at anytime.

How does the refund policy work?
If for any reason you want to cancel withing 5 days of signing up, email us and we will cancel and refund your money. Also, if you complete the course and don’t increase your score from the diagnostic test, we will refund your money.

How does the course work?
It is 100% online. All of the lessons and video explanations are prerecorded. After you finish your diagnostic test for a specific test prep course, you will have access to the lessons and practice problems. Our system tracks your progress and provides feedback regarding which topics to work on to maximize your score.

Can I access the course from my phone or tablet?
Yes. As long as you have one of the major browsers on your device, you can access our course.

Can I watch the lessons in any order and answer practice questions/tests in any order?
Yes, you can go through our lessons in any order after finishing the diagnostic test. However, we recommend that you follow the order in which the content is presented. The practice tests and some practice problems are locked based on completing certain lessons.

Used at Staten Island Technical High School’s Summer STEAM Camp

Our teachers grew very comfortable with the curriculum right away. The online resources are incorporated in our lessons and used as students’ homework, so the students can do the work at home on their own as well. It’s an excellent standalone tutoring program in addition to one that can be used with teachers. The program grades the papers for the kids making it much easier for the tutors, and everyone seems quite happy with it.

-Barry Levine, SHSAT Tutoring Supervisor at Staten Island Tech STEAM Camp

Sign Up for a Test Prep+ Membership to Access All of Our Courses