Infant/Toddler Environment Rating Scale®, Third Edition (ITERS-3™)

Infant/Toddler Environment Rating Scale®, Third Edition (ITERS-3)

The Third Edition of the ITERS is a major revision that introduces innovations in both the content and the administration of the scale, while still retaining continuity of the two primary characteristics of the ITERS—its global definition of quality and its reliance on observation as the primary source of information on which to base assessment of classroom quality.

Scale consists of 33 items organized into 6 subscales:

Space and Furnishings

  1. Indoor space
  2. Furnishings for care, play, and learning
  3. Room arrangement
  4. Display for children

Personal Care Routines

  1. Meals/snacks
  2. Diapering/toileting
  3. Health practices
  4. Safety practices

Language and Books

  1. Talking with children
  2. Encouraging vocabulary development
  3. Responding to children's communication
  4. Encouraging children to communicate
  5. Staff use of books with children
  6. Encouraging children's use of books


  1. Fine motor
  2. Art
  3. Music and movement
  4. Blocks
  5. Dramatic play
  6. Nature/science
  7. Math/number
  8. Approriate use of technology
  9. Promoting acceptance of diversity
  10. Gross motor


  1. Supervision of gross motor play
  2. Supervision of play and learning (non-gross motor)
  3. Peer interaction
  4. Staff-child interaction
  5. Providing physical warmth/touch
  6. Guiding children's behavior

Program Structure

  1. Schedule and transitions
  2. Free play
  3. Group play activities