A growing number of states and local schools across the country have adopted educator evaluation and accountability programs based on the use of student test scores and value-added models (VAM). A wide array of potential legal issues could arise from the implementation of these programs. This article uses legal analysis and social science evidence to discuss potential legal challenges by educators to the use of VAM that should be considered by public policy makers. It also discusses potential ways VAM might be used as evidence in support of legal claims by students concerning access to educational opportunity. Keywords: Law; value-added models (VAM); teacher quality; teacher evaluation; merit pay; testing; accountability Cuestiones legales en el uso de resultados de exámenes de estudiantes y modelos de valor añadido (MVA) para determinar calidad educativa Resumen: Un número creciente de estados y distritos escolares en todo el país han aprobado programas de evaluación docente y rendición de cuentas basados en el uso de resultados de los epaa aape
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