ReadTheory is a K-12 online reading comprehension program that presents assessments to students at a "just right" level. Using algorithmic science coupled with grade and Lexile® level information, we ensure our assessments are always challenging but never discouraging. After just 20 minutes on ReadTheory, students generate enough data to populate their very own progress reports replete with insights about their unique reading abilities.

Over 5 million students have completed more than 89 million quizzes on ReadTheory to date.

Available Anywhere, Anytime
Available for desktop and mobile, you can use ReadTheory whenever and wherever you want.
Trusted by Teachers
"ReadTheory is a great program. It enables me to provide differentiated reading to my students who have struggled to pass our state exam and are largely English Language Learners."
"ReadTheory is a valuable tool for helping kids grow as readers. I am requiring it for all of my students this year."
"I use ReadTheory for IEP progress monitoring—thanks to the awesome data it provides—and recommend to parents for students to use at home. A powerful, powerful tool."
"I love the way students can track their progress and I can easily see many different reports as they go. I look forward to using it for years to come."
  • Gabriel Cerda
    ELA teacher at PSJA North Early College High School
  • Agnes Arnborg
    ELA teacher at Littleton Elementary School
  • Rochelle Spicer
    Special services teacher at Olathe South High School
  • Nikkos Almofa
    ELA teacher at Plainview Middle School
Review our preliminary study results to learn how ReadTheory improves test scores, grades, and confidence.
Get Started in Minutes
Step 1: Create Classes

Immediately after signing up, teachers are prompted to create their first class, and creating classes on ReadTheory has never been easier. We provide a four-step process by which you can create classes, manage students and view login information. We realize teachers have limited time to get our program up and running, a fact that has remained in our purview throughout the design process. Check out our short video for a visual presentation of our class creation process and more.

Step 2: Take Quizzes

Each of our assessments has been crafted with rigor and love by the members of our team , and is designed to teach students to think critically, draw inferences, understand scope and global concepts, find or recall details, and infer the meanings of useful vocabulary words.

Using cutting edge software and carefully crafted and tested content, we provide students with a dynamic reading experience that adapts to their individual ability levels and presents them with a seemingly endless array of skill building exercises. What is more, as students continue to use the site and see their scores gradually improve, our program adapts to match their progress. Our quizzes span the full range, beginning with elementary school reading and ending with the most demanding SAT, ACT, and GRE level reading comprehension questions.

Step 3: Analyze Data

After spending just 20 minutes on our site, students will have accumulated enough data to populate a progress report—a detailed account of their performance on our pretest and subsequent post-tests. Via an array of metrics, charts, and easy-to-understand graphs, we provide teachers the complete visual breakdown. Highlighted in this breakdown is detailed information regarding the strengths and weaknesses students show related to the English Language Arts Common Core State Standards (CCSS) outlined below...

  • Key Ideas and Details
  • Craft and Structure
  • Integration of Knowledge and Ideas
  • Range of Reading and Level of Text Complexity
  • Research to Build and Present Knowledge
  • Text Types and Purposes
  • Production and Distribution of Writing
Step 4: Improve Abilities

Our program meets national benchmarks and is aligned with the Common Core. By learning to read, write, and think critically, students are better prepared to perform well on standardized tests, go to college, and achieve success in the real world.

We provide high-quality, engaging content, designed to help students develop the critical skills outlined by national benchmarks and specified by the Common Core State Standards (CCSS). Per CCSS guidelines: "With students, parents, and teachers all on the same page and working together toward shared goals, we can ensure that students make progress each year and graduate from high school prepared to succeed in college, career, and life." By using ReadTheory, students and teachers alike are apt to accomplish this goal.