Current reforms in the Maltese and Scottish educational contexts can only be fully implemented if teachers radically transform the way they teach. Teacher professional learning is an important mechanism that policy-makers, school leaders and administrators have to achieve this. Teacher professional learning is, above all, situated within the specific social workplace environment of teacher practice. Thus, schools need to be recognised as important sites of professional learning for teachers. In Malta and Scotland teachers were asked about their professional learning to identify how the learning environment within individual schools affects professional learning. In both countries, collaboration and school leadership were key components in determining a school's learning environment. Data analysis led to the production of examples of expansive and restrictive features. Policy-makers, school leaders and administrators can use these features to examine how schools operate in terms of helping or hindering professional learning in the school environment.