Actionable insights to support early learners

CBM Assessments

In the early grades, students develop the reading and math skills that form the foundation for their future learning. Star CBM allows you to accurately assess students’ development so that you can better target instruction and intervention to each learner’s specific needs.


1:1 administration gives you a first-hand understanding of your students’ learning gaps and instructional needs.


In-depth data helps you identify patterns of errors so you can leverage students’ strengths and identify opportunities for growth.


Star CBM assesses the building blocks of reading and math that are crucial for developmental growth and set the stage for future achievement.


Multiple forms are provided for each measure, so you can administer Star CBM as often as weekly to track students’ development.

Streamlined administration, comprehensive CBM reporting

Teachers administer 1:1 to students online, remotely or in print to get an in-depth understanding of student development.

Star CBM supports digital and paper administration , in person and remote delivery, with clear instructions for easy administration.

Item level scoring and clear reports give you actionable insights and appropriate next steps.

Star CBM supports digital and paper administration , in person and remote delivery, with clear instructions for easy administration.

Item level scoring and clear reports give you actionable insights and appropriate next steps.

Watch now

Meet Star CBM

Learn how Star CBM promotes students’ development in reading and mathematics with curriculum-based measures.

Learn more about Star CBM

Track students’ developmental growth

CBM Assessments for reading & math

Star CBM provides a progression of measures in both reading and mathematics that helps you track students’ progress toward third-grade proficiency.

Star CBM Reading begins by assessing students’ understanding of letters and their sounds, moves on to basic phonological awareness and early decoding, and progresses to passage reading.

Star CBM Math demonstrates students’ developing math competency, including recognizing numerals and their value, as well as learning basic facts in addition, subtraction, and multiplication.

Measures for grades K-6

Boy with headphones
  • Letter Naming
  • Letter Sounds
  • Phoneme Segmentation
  • Receptive Nonsense Words
  • Expressive Nonsense Words
  • Passage Oral Reading
  • Sight and High-Frequency Words
  • Encoding

Use in dyslexia screening

girl with headphones

Along with measures of reading achievement, Star CBM Reading includes assessment of Rapid Automatic Naming (RAN), which many states and professionals require as part of universal screening for dyslexia for all students in kindergarten through grade 3.

See sample measures from Star CBM

The student experience

Letter Sounds

This Star CBM Reading measure assesses students’ understanding of alphabetic principle and print concepts, asking them to produce the sound associated with each consonant (both upper and lower case).

Passage Oral Reading

This measure assesses students’ decoding and fluency skills when reading connected text, with high correlations to comprehension.

Quantity Comparison

This Star CBM Math measure assesses students’ understanding of number sense, a foundation for later analysis and reasoning.

Mixed Addition and Subtraction

This Star CBM measure assesses students’ growing ability to solve simple addition and subtraction “math facts” critical to continued mathematical achievement.

Pair CBM assessment with myIGDIs and Star Early Literacy

Strengthen early childhood assessment

myIGDIs for Preschool

Put your earliest learners on the pathway to kindergarten readiness with research-based indicators for early literacy (in both English and Spanish), early numeracy, social-emotional development, and more.

Star Early Literacy

Discover the computer-adaptive assessment that measures early literacy and numeracy skills, providing reliable data about phonological awareness, phonics, word recognition, counting, and more. Available in both English and Spanish.

Now available

Star CBM Lectura for grades K–6. Assessments that truly reflect students’ literacy development in Spanish.

I like the fact that Star CBM is computer-based, so it is very convenient to use and saves teachers time. Also, the Oral Reading Fluency passages are more aligned to specific grade levels than other reading assessments we have used.

Leigh Twigg • Professional Development Specialist, Calhoun County Schools (AL)

New product update

Braille support in Star CBM Reading and Star CBM Math.

FAQs about Star CBM and CBM Assessments

Understanding Star CBM

How does Star CBM differ from traditional CBM assessments?

Star CBM builds upon traditional CBM assessments by incorporating advanced technology, adaptive testing, and detailed reports. It offers a more efficient and precise assessment experience, allowing educators to gain insights into students’ progress at a granular level. The adaptive nature of Star CBM ensures that the difficulty level of the assessments adjusts to match the student’s abilities.

Can Star CBM be used to support intervention and instructional planning?

Yes, Star CBM is designed to support intervention and instructional planning. The assessment data provided by Star CBM helps educators identify students who may require additional support or intervention, tailor instruction to individual needs, set specific goals, and monitor progress over time. The reports generated by Star CBM offer valuable insights that inform the development of targeted interventions and instructional strategies.

How is Star CBM administered?

Star CBM is administered digitally using Renaissance’s platform. Students engage with the assessments through computer-based tasks that align with the curriculum. The platform records and analyzes their responses to generate detailed reports for educators.

How frequently should Star CBM assessments be administered?

The frequency of Star CBM assessments can vary depending on the educational setting and individual student needs. However, it is generally recommended to administer CBM assessments at regular intervals throughout the school year to monitor student progress effectively. The specific schedule can be determined based on the educational goals, the curriculum, and the response to interventions implemented.

What academic areas does Star CBM assess?

Star CBM assesses a wide range of academic skills, including reading fluency, reading comprehension, math computation, math problem-solving, and early literacy skills. It covers the foundational skills necessary for academic success across various grade levels.

Can Star CBM be customized for different grade levels or specific curriculum requirements?

Yes, Star CBM can be customized to meet the needs of different grade levels and align with specific curriculum requirements. The assessments are designed to be adaptable and provide accurate measurement within the context of each educational setting.

Additional Resources


Expand your perspective with complementary data from Star computer-adaptive and Star curriculum-based measurement assessments.


Learn how Star CBM and Star computer-adaptive measures provide complementary data to help address your data needs.

Want to learn more?

A Renaissance representative can provide you with a more detailed understanding of Star CBM

Select your school

Searching for schools in ZIP code ---

Loading schools…

Don't see your school?