For investigating a comprehensive PLC framework, instruments are needed that capture the multi-layered PLC characteristics and that take into account the complex influencing educational context. Such instruments are currently lacking. This study aims at describing the development and validation of two qualitative classification instruments usable…

Fostering the development of Professional Learning communities (PLCs) should be a priority for education because of their capacity to enhance teachers' professional development. However, in everyday educational (school) contexts studying and supporting the growth of PLCs is a complex endeavour. As a consequence, there is a lack of instruments for…