The purpose of this study was to measure teachers' views about trust between teachers, trust between the principal and teachers, peer collaboration, positive attitudes towards the school and how these antecedents influence the academic pressure teachers put on pupils with respect to learning and learning intensity and performance. The methodology involved was a cross-sectional survey of 234 teachers from 11 Norwegian schools. The structural equation analysis indicated that principal-teacher trust has a moderately high impact on such constructs as "teacher-teacher trust" and "academic pressure" and that "teacher-teacher trust" has a moderately high impact on teachers' "peer collaboration". "Peer collaboration" has a lower impact on "academic pressure", while the impact of "positive attitudes towards the school" was moderately high. The article concludes with a discussion of the knowledge basis for understanding how social practice among teachers and school leaders in school communities is mobilised for a sustained focus on pupil learning. Implications for practice and directions for future research are discussed. (Contains 1 figure, 3 tables and 3 footnotes.)