The Classroom Assessment Scoring System (CLASS)

The Classroom Assessment Scoring System (CLASS) ™ measures the quality of teacher/child interactions. Two CLASS scales are used in San Francisco:

  • CLASS Toddler is used in child care settings serving children 15 months through 3 years
  • CLASS Pre-K is used in settings serving children 3 years to 5 years

Observers will use the appropriate CLASS scale based on the age range of the children enrolled in the early education setting. For example, if the children in a center-based classroom or family child care program are 3.5 to 4.5 years old, CLASS Pre-K will be used to measure quality of interactions. Similarly, if children in a center-based classroom or family child care program are 15 months to 2.5 years of age, CLASS Toddler will be used.

In family child care it is likely that a mixed age group will be present. In this case, the observer will utilize both scales to measure the range of interactions with toddlers and preschoolers.

After scheduling an observation, a confirmation packet is mailed to the program. The confirmation packet includes documents intended to serve as a resource for programs to prepare for the observation.

Confirmation Packet Information