Classroom Assessment Scoring System (CLASS)

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.

Content

Category
Sub-Category
Domains
Classroom Instruction
Grades
Pre-Kindergarten,
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
Languages
English
Respondent
Observer

Administration Information

Length
Four cycles of 15 minute observations.
Qualifications

Yes, training is required for administration.

Access and Use

Open Access
No
Use in Research

Allen, J. P., Pianta, R. C., Gregory, A., Mikami, A. Y., & Lun, J. (2011). An interaction-based approach to enhancing secondary school instruction and student achievement. Science333(6045), 1034-1037. https://www.doi.org/10.1126/science.1207998

Gregory, A., Allen, J. P., Mikami, A. Y., Hafen, C. A., & Pianta, R. C. (2014). Effects of a professional development program on behavioral engagement of students in middle and high school. Psychology in the Schools51(2), 143-163. https://doi.org/10.1002/pits.21741

Pianta, R. C., Belsky, J., Vandergrift, N., Houts, R., & Morrison, F. J. (2008). Classroom effects on children’s achievement trajectories in elementary school. American Educational Research Journal45(2), 365-397. https://doi.org/10.3102/0002831207308230

Psychometrics

Scoring
Manual scoring
Referencing
Norm-referenced
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 Review42(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 Journal104(5), 409-426. https://eric.ed.gov/?id=EJ696268

National Comparison
Yes