Classroom Assessment Scoring System (CLASS®)

The Classroom Assessment Scoring System (CLASS®) is an observational assessment tool designed to assess classroom quality.

The CLASS®, developed at the University of Virginia, focuses on teacher-child interactions. Such interactions contribute to a student’s academic achievement. Results of the CLASS® help educators understand and improve their teaching practices and classroom environments.

The CLASS® measure includes 10 subscales organized into three domains:

  • Emotional Support;
  • Classroom Organization; and
  • Instructional Support.

Each subscale 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 typical cycle for the CLASS® involves about 20 minutes of observing followed by 10 minutes of scoring.

Learn about our CLASS®-related services and in-person trainings.

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