TY - JOUR A1 - Kalinowski, Eva A1 - Egert, Franziska A1 - Gronostaj, Anna A1 - Vock, Miriam T1 - Professional development on fostering students’ academic language proficiency across the curriculum T2 - Teaching and teacher education N2 - This meta-analysis aggregates effects from 10 studies evaluating professional development interventions aimed at qualifying in-service teachers to support their students in mastering academic language skills while teaching their respective subject areas. The analysis of a subset of studies revealed a small non-significant weighted training effect on teachers' cognition (g' = 0.21, SE = 0.14). An effect aggregation including all studies (with 650 teachers) revealed a medium to large weighted overall effect on teachers' classroom practices (g' = 0.71, SE = 0.16). Methodological variables moderated the effect magnitude. Nevertheless, the results suggest professional development is beneficial for improving teachers' practice. KW - professional development KW - language KW - cross-curriculum KW - content areas KW - in-service teacher training Y1 - 2019 UR - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/58639 SN - 0742-051X VL - 88 PB - Elsevier Science CY - Amsterdam ER -