Teacher Professional Development and Student Reading Achievement: A Meta-Analytic Review of the Effects

Abstract

Research-based instruction is necessary to support students’ reading development, and professional development (PD) is a critical avenue to ensuring high-quality instructional practices. To date, there has been no comprehensive review focused on the effects of teacher PD on student reading achievement. As such, the purpose of the present meta-analysis was to examine the impact of teacher PD on reading outcomes for students in kindergarten through 8th grade. A secondary aim was to determine whether study, program, or participant characteristics were potential moderators of these effects. A comprehensive search of published and unpublished research between 1975 and 2017 resulted in 28 studies that met prescribed criteria. Results indicate that teacher PD has a moderate and significant, positive average effect on reading achievement. However, moderator analyses did not explain the variance in the effects of PD on student outcomes. Primarily, studies represented typically-developing students in the elementary grades, with only three studies including middle school students and four studies including reading outcomes of students with or at-risk for reading disabilities. Recommendations for improved study designs that allow for more in-depth investigation of the characteristics of effective PD and mechanisms of change in student outcomes are discussed.     

Education Catching Up with Science: Preparing Students for Three-Dimensional Literacy in Cell Biology

The large number of experimentally determined molecular structures has led to the development of a new semiotic system in the life sciences, with increasing use of accurate molecular representations. To determine how this change impacts students’ learning, we incorporated image tests into our introductory cell biology course. Groups of students used a single text dealing with signal transduction, which was supplemented with images made in one of three iconographic styles. Typically, we employed realistic renderings, using computer-generated Protein Data Bank (PDB) structures; realistic-schematic renderings, using shapes inspired by PDB structures; or schematic renderings, using simple geometric shapes to represent cellular components. The control group received a list of keywords. When students were asked to draw and describe the process in their own style and to reply to multiple-choice questions, the three iconographic approaches equally improved the overall outcome of the tests (relative to keywords). Students found the three approaches equally useful but, when asked to select a preferred style, they largely favored a realistic-schematic style. When students were asked to annotate “raw” realistic images, both keywords and schematic representations failed to prepare them for this task. We conclude that supplementary images facilitate the comprehension process and despite their visual clutter, realistic representations do not hinder learning in an introductory course.