Capti Assess with ETS® ReadBasix™

A diagnostic reading assessment, based on the Science of Reading, to inform instruction & intervention. Now including Lexile™ scores!

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“A Real Diagnostic!”

Sean Morrisey, ELA Standards Leader, NY

  • "ReadBasix is the only assessment that identified the underlying reason for poor reading comprehension."
  • "With the 6 subtests, you can really figure out where the students’ weaknesses are."
  • "I could break it up into subtests. Once students are done, we didn’t lose a whole day of a lesson."

Watch the full testimonial and more

6 quick reading level tests for key reading skills

  • A reading assessment for elementary and beyond, tested and normed for grades 3-12
  • Choose what skills to assess and reassess as needed: one skill, two, or all six at once
  • Difficulty level is automatically personalized on a per-skill basis from test to test (not during the test)

Learn about individual subtests

Instant, informative, actionable reports

  • Understand the areas of strength and weakness to drive instruction and intervention
  • Get nationally normed percentiles, grade level equivalent scores, and Lexile reading measures
  • Get overall performance profiles, scale score, interpretations, and RTI Tier 1-3 recommendations
  • Use level-appropriate instructional activity recommendations for each of skill

Examine sample reports

Screening, benchmarking, diagnosing, & monitoring

  • Screen ES students with vocabulary & morphology, MS and HS students — with reading comprehension
  • Benchmark all students 2-3 times a year remotely or in person, synchronously or asynchronously
  • Diagnose the foundational skills with Subtests 1-5 when reading comprehension is below grade level
  • Monitor progress and evaluate the effectiveness of your intervention on specific skills every 4 weeks

PD Course on the Science of Reading

  • Learn about the Science of Reading and the research behind ETS ReadBasix Assessment
  • Take a deep dive on the five foundational skills and why it is important to assess them
  • Get hands on with each of the ReadBasix subtests and learn how to administer them
  • Learn how to interpret assessment reports and create instructional reading plans

See PD Summary

A solid foundation of rigorous research

  • Based on 20+ years of reading science, instruction, and assessment research
  • One of the most researched diagnostic tools with 11 peer-reviewed publications
  • Trusted by education researchers as a sensitive measure of key reading skills

Review research findings

A history of reliability and consistency

  • Consistent with the National Reading Panel’s conclusions and recommendations
  • Created with grants from the Institute of Education Sciences, SERP Institute, Carnegie, & Lila Wallace
  • Administered hundreds of thousands of times with K-12 students and adults in the U.S. and abroad

Learn the history of Capti Assess





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