longitudinal data system

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Longitudinal data system is a data system capable of tracking student information over multiple years in multiple schools.{{cite web |title=Defining "Longitudinal Data System" |url=https://nces.ed.gov/forum/ldsguide/book1/ch_2_1.asp |website=The Institute of Education Sciences |publisher=The Institute of Education Science |access-date=22 March 2025}} The term appears in Federal law of the United States to describe such a system. Federal funding is provided to aid the design and implementation of such systems.