Developing Student Agency to Support Learning-Trajectory-Based Formative Assessment
High-quality formative assessment practices depend on teachers having a clear sense of learning goals, an understanding of the learning trajectories students progress along toward these goals, criteria for assessing students' progress, and ways of using this information to inform instructional decisions. In this chapter, the authors describe efforts to support teachers' practice with a focus on learning trajectory-based formative assessment. These professional development efforts moved away from delivering professional development to teachers and evolved into professional learning with teachers as co-researchers and co-designers. The authors discuss this collaborative inquiry approach to supporting elementary teachers' understanding and use of learning trajectory-based formative assessment in mathematics classrooms, and share examples of the various forms of inquiry developed, and ways in which teachers engaged in these activities as part of the collaborative inquiry.