This toolkit is designed to assist states as they plan for and carry out their efforts to collect, report, analyze, and use high-quality parent and family involvement data. It defines key concepts; offers guidance on ways to improve the quality of the collection, analysis, and use of parent and family involvement data; and provides resources and tools to help states in their parent involvement data efforts. The toolkit also contains guidance on involving stakeholders to ensure: (1) data collection activities are relevant to and understandable by parents/families; (2) the state and other stakeholders accurately interpret data; and (3) state agencies receive additional expertise and support using the data to identify and address issues related to parent/family involvement. The toolkit is designed to allow various navigation options. There are four primary sections: preparing for data collection (READY), collecting data (RUN), analyzing data (REFLECT), and using the collected information to consider current results and goals and share data with others (REACH). The toolkit also includes resources and tools to help states make the most of their parent/family involvement data and supplementary information on topics such as working with third-party contractors and creating or modifying a new parent/family involvement survey.