Formative assessment is assessment for learning, or measurement that helps teachers monitor student learning and inform pedagogical moves. There is compelling evidence that attention to classroom formative assessment can produce greater gains in student achievement than any other change in what teachers do. Professional learning of classroom assessment practices is formative assessment literacy. In recent NSF-funded research, we addressed aspects of formative assessment literacy for K-12 CS. We drew on education literature and the needs of K-12 CS to develop...