The Data Quality Campaign (DQC) The Data Quality Campaign (DQC), a strong advocate for statewide student-level longitudinal data systems, reports on how to create or transition to a state-level next generation system, evaluates how current systems are organized, and lays out recommendations for state P-12 data systems including ten essential elements. With these essential elements, the data system becomes a powerful tool for tracking individual student progress, serving as an early warning system, conducting program evaluation activities, and answering important policy questions.