Collective efficacy is an emergent construct that describes an interdependent group’s perceptions of their combined capability to successfully complete a task or accomplish a goal. Developed as part of social cognitive theory, collective efficacy assumes that the group actors have agency. Collective efficacy beliefs are theorised to be reciprocally related to environmental and behavioural factors. Empirical investigation of this construct found that it is distinct from personal efficacy beliefs and fostered through mastery experiences. Collective teacher efficacy predicts student achievement and teacher attitudes toward their jobs. Study of collective efficacy is limited to mostly adult samples.