TPITOS™ is the essential tool you need to ensure that infant–toddler teachers are using the Pyramid Model practices with fidelity. Modeled after the Teaching Pyramid Observation Tool (TPOT™) for Preschool Classrooms, TPITOS is for early childhood center-based programs caring for infants and toddlers. Focusing on teacher practices and classroom environment variables, TPITOS measures how well your program’s staff is fostering responsive, nurturing relationships with children and promoting strong social-emotional development in their earliest years. (author abstract)