All About the Classroom Assessment Scoring System

The Classroom Assessment Scoring System® (CLASS®) is a research-based method of measuring, evaluating, and improving teacher-child interactions.

The CLASS, developed at the University of Virginia, focuses on teacher-child interactions. Results of the CLASS help early childhood professionals understand and improve their teaching practices and classroom environments.

Bright & Early ND utilizes three scales, each designed for a different segment of the early childhood field.

  • Infant CLASS: This tool is designed to assess effective teacher-child interactions in care environments serving children birth to 18 months.
  • Toddler CLASS: This tool is designed to assess effective teacher-child interactions in care environments serving children 19-35 months.
  • Pre-K CLASS: This tool is designed to assess effective teacher-child interactions in care environments serving children ages 3 to 5 years.

Each subscale of the CLASS tools is scored on a 7-point scale, with a score of 1 and 2 considered to be low-range; 3, 4, and 5 are mid-range; and 6 and 7 are high range. A typically cycle for the CLASS involves about 20 minutes of observing followed by 10 minutes of scoring.

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