This paper studies, using quantitative and qualitative data, the effectivity of a professional development approach in which a national summative assessment is used formatively to stimulate 19 teacher teams in Dutch secondary education to improve their data use for instruction and learning. The approach is based on conceptual similarities between…

This mixed-method study examined the impact of an online formative assessment tool on the language and early literacy skills development of 204 3-4-year-old children enrolled in Head Start. Twenty-four classroom and children participated in a two-group randomized control trial, in which classrooms in the treatment condition implemented weekly…