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    Research Cover: K-12 CLASS Summary

    Research: CLASS in K-12

    How class-size reductions and improved teacher-child interactions resulted in better child outcomes.  

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    See what happens when hundreds of K-12 teachers implemented the CLASS system in their classrooms.  

    Dig deeper into the evidence supporting use of the CLASS tool at the K‐12 age level. In this PDF you'll find summaries of papers that:

    • Present descriptive information from CLASS or COS observations
    • Document the ways in which teacher and classroom characteristics are associated with CLASS or COS observations
    • Link CLASS or COS observations to students' social and/or academic development

    To download our summary, simply complete the form on this page.

    Download the Research Paper