Classroom Assessment Scoring System (CLASS)

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Instrument Overview

The Classroom Assessment Scoring System ™ (CLASS ™) is an observational instrument developed to assess instructional quality in PK-12 classrooms. It is a tool for analyzing the quality of teacher-student interactions in the classroom by capturing multiple dimensions of teaching that are linked to student achievement and development. It produces qualitative ratings of teacher performance on a scale from 1-7 across three broad domains: emotional support, classroom organization, and instructional support. As described by the authors: The Classroom Assessment Scoring System (CLASS) is an observational instrument developed to assess classroom quality in preschool through third grade classrooms. The CLASS dimensions are based on observed interactions among teachers and students in classrooms. The dimensions were derived from a review of constructs assessed in classroom observation instruments used in childcare/Elementary school research, literature on effective teaching practices, focus groups, and extensive piloting. The Observational Record of Classroom Environments (ORCE, ECRN, NICHD, 1996) served as a foundation for the development of the CLASS. Subscore(s): Healthy Relationships, Effective Classroom Management, Instructional Support, Classroom Emotional Environment.

Note: The overview provided for this instrument includes content that may have been sourced from the instrument publisher's or author’s website (or other site providing information about the instrument). This information is presented for educational and informational purposes only. If you have any questions about the content or its permitted uses, please contact annenberg@brown.edu.

Organization

Student Well-Being Category

American Institutes for Research® partnered with the Annenberg Institute at Brown University to collect instruments related to student well-being.

Content

Grades
Kindergarten,
1st Grade,
2nd Grade,
3rd Grade,
4th Grade,
5th Grade,
6th Grade,
7th Grade,
8th Grade,
9th Grade,
10th Grade,
11th Grade,
12th Grade
Keywords
Schooling ; Teaching ; Classroom Instruction
Languages
English
Respondent
Observer

Administration Information

Length
Four cycles of 15 minute observations.

Access and Use

Developer
Teachstone
Price

Prices vary, see the publisher’s website.

Contact

contact@teachstone.com

Publisher: Paul H. Brookes Publishing Co.
Post Office Box 10624
Baltimore, MD 21285‐0624
Phone: 800‐638‐3775
Website: www.brookespublishing.com

Open Access
No
Setting
Classroom

Psychometrics (additional guidance)

Psychometric References

Allen, J., Gregory, A., Mikami, A., Lun, J., Hamre, B., & Pianta, R. (2013). Observations of effective teacher - student interactions in secondary school classrooms: Predicting student achievement with the classroom assessment scoring system—secondary. School Psychology Review, 42(1), 76-98. https://doi.org/10.1080/02796015.2013.12087492

La Paro, K. M., Pianta, R. C., & Stuhlman, M. (2004). The classroom assessment scoring system: Findings from the prekindergarten year. The Elementary School Journal, 104(5), 409-426. https://eric.ed.gov/?id=EJ696268