This report constitutes the Baseline Report of the multi-year study of the Australian Government Department of Foreign Affairs and Trade’s (DFAT) investment in teacher development in Lao PDR through the Basic Education Quality and Access in Laos program (BEQUAL). This Lao PDR study is part of a three-country multi-year study series on teacher development, in response to DFAT’s Office of Development Effectiveness’ 2015 Investing in Teachers report. This study is framed within the context of Lao PDR’s staged introduction of a new primary education curriculum, and accompanying in-service teacher professional development support. The overall aim of this study is to investigate the teacher professional development component to answer the question: to what extent does BEQUAL support improve teaching quality and student literacy in Lao PDR?