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The accurate, reliable way to assess teacher–child interactions

For early elementary school classrooms

CLASS logoWith this K–3 version of the widely used CLASS® tool, your school will have an accurate, reliable way to assess classrooms. For use with children in the first years of elementary school, the CLASS K–3 tool assesses teacher–student interactions, a primary ingredient of educational experiences that set students on the path to academic and social success.

This reliable and valid tool

  • assesses three key domains of teacher–student interaction: Emotional Support, Classroom Organization, and Instructional Support
  • provides developmentally appropriate descriptions of what effective interactions look like in K-3 classrooms
  • establishes an accurate picture of classroom interactions through brief, repeated observation and scoring cycles
  • highlights areas of strength and areas for growth useful for guiding improvement efforts
  • provides important information related to your program’s most urgent needs: accountability, professional development, and research

The CLASS K–3 dimensions

The CLASS K–3 tool measures 10 critical dimensions that fall under three domains. You can get a reader-friendly overview and teaching tips for each domain in the CLASS K–3 Dimensions Guide. (Sign up to receive a free sample CLASS Dimensions Overview.)

Emotional support

  • positive climate
  • negative climate
  • teacher sensitivity
  • regard for student perspectives

Classroom organization

  • behavior management
  • productivity
  • instructional learning formats

Instructional supports

  • concept development
  • quality of feedback
  • language modeling


Reliable use of the CLASS tool requires training. The two-day CLASS Observation Training prepares observers to use the measure accurately and culminates with a test and one-year CLASS observer certification. For more information on recommended training, availability, and scheduling, please visit the Teachstone website.