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Ludwig, Jens; Bassi, Laurie J. – Educational Evaluation and Policy Analysis, 1999
Shows that commonly used "value-added" models are misspecified when estimated using the National Education Longitudinal Study, a finding that raises questions about whether previous value-added studied are unbiased. Also reviews more recent literature using instrumental variables methods to address omitted variables bias. (SLD)
Descriptors: Academic Achievement, Elementary Secondary Education, Expenditures, Resource Allocation