HighScope's research-validated child assessment tools serve multiple purposes.  They are designed to

• Look at meaningful educational outcomes 
• Gather information in ways that are natural and comfortable for children and adults
• Provide accurate data that can be used for individual child planning and policy-level decision making

View the research for the Preschool and Infant-Toddler Child Observation Tools

• Preschool COR Development and Validity
• Infant-Toddler COR Development and Validity