This report – Summary of Findings – is intended to support evidence-based decision making by those involved in the design and use of school learning environments. It summarises the findings of a three-year collaborative research initiative involving Catholic Education Melbourne (CEM), Catholic Education Diocese of Parramatta (CEDP) and the Learning Environments Applied Research Network (LEaRN) at the University of Melbourne. The Towards Effective Learning Environments in Catholic Schools (TELE): An Evidence Based Approach (2015-2017) project is one of the largest known studies to have evaluated the relationships between the built environment and the pedagogical practices and activities of school teachers and students. The findings have been drawn from the rigorous evaluation of 43 learning environments in 38 schools.