How is the CLASS™ tool developed?

Each age and grade level of the CLASS™ observation tool is thoroughly vetted through the development process.

1. Research and Development

  • Authors focus on understanding and categorizing developmentally appropriate interactions.
  • The initial organization and structure of the measure is created.
  • Preliminary use of the tool assures that observers may be reliably trained and that scores are related in expected ways to other classroom measures.

2. Pilot

  • Data are used to refine and finalize the structure and organization of the measure.
  • The initial set of observation training and support materials is developed.
  • Teachstone provides a limited number of trainings to research partners to build the dataset around the measure.

The Infant CLASS™ tool is in this stage of development.

3. Field Test

  • The now-final version of the tool is made more widely available.
  • Development of additional observation training materials is underway.

4. Version 1, 2, 3, etc.

  • The full complement of related observation training materials is available.
  • Development and dissemination of related professional development programs is underway.

The Toddler, Pre-K, K-3, Upper Elementary and Secondary CLASS™ tools are in this stage of development.