Extensive debate and criticism of potentially common, yet questionable research practices that lead to biased findings within social and health sciences has emerged over the last decade. These challenges likely apply to educational psychology, though the field has been slow to address them. This article discusses current research norms, strategic solutions proposed under the broad rubric of “Open Science”, and the implications of both for the way research syntheses in educational psychology are conducted and the quality of the information they produce. Strategies such as preregistration, open materials and data, and registered reports stand to address significant threats to the validity of research synthesis. These include challenges associated with publication, dissemination, and selective reporting biases, comprehensive information retrieval, and opportunities to execute unique analytic approaches. A final issue is the development of parallel solutions that address biases specific to the decision making of researchers conducting and evaluating research syntheses. PLEASE DO NOT CITE YET:This article is part of a forthcoming journal Special Issue on Open Science in Education and currently under review. Carly Robinson is NOT the correct author, so please do not cite this article until it is updated with the correct authors' names. If you are interested in citing this work please either (a) check back at this url later -- we anticipated that the correct authors' names will be included no later than February 2021, or (b) contact Carly Robinson (carly_robinson@brown.edu) directly to see if the paper might be cited on an earlier time frame.