2016 – The Need for Large-Scale, Longitudinal Empirical Studies in Middle Level Education Research Posted on 20162017 by danzap@illinois.edu The Need for Large-Scale, Longitudinal Empirical Studies in Middle Level Education Research Mertens, S.B., Caskey, M.M., & Flowers, N., Middle Grades Review, Vol. 2, No. 2, Article 2 [Accessible online here.]