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Direct linkTienken, Christopher H.; Achilles, Charles M. – Research in the Schools, 2009
Class-size reduction (CSR) initiatives have demonstrated positive short- and long-term effects in elementary grades. Less is known about CSR influence on achievement in middle grades. Thus, we conducted a non-experimental, longitudinal, explanatory study of CSR influence on writing achievement of 3 independent cohorts of students (n = 123) in…
Descriptors: Class Size, Writing Achievement, Statistical Analysis, Achievement Gains
