Assessing the validity of the Qualistar early learning quality rating and improvement system as a tool for improving child-care quality [electronic resource] / Gail L. Zellman [and others] : prepared for Qualistar Early Learning.

"As a result of the generally low quality of child care in the United States and the increased emphasis on accountability in education policy, quality rating systems (QRSs) are proliferating in the child-care arena. QRSs assess child-care providers on multiple dimensions of quality and integrat...

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