Educational data must follow students as they cross state lines, and policy makers must be equipped with the tools needed to ensure that teachers, students, and parents have access to this important information, according to two reports released by the Data Quality Campaign (DQC). One such tool is an open-source system that lets educators pull and use data from a range of existing sources, created with support from the Dell Foundation. Another is an interstate data exchange system being used by four states. The DQC defines student data as more than test scores-it includes attendance, course...