The document provides information on assessment for learning (formative assessment) as a characteristic of effective instruction within the Iowa Core. It defines assessment for learning as a process used by teachers and students during instruction to provide feedback and adjust teaching and learning to improve student achievement. The summary highlights key aspects of assessment for learning, including using a variety of strategies to monitor progress toward learning goals, providing descriptive feedback, incorporating self- and peer-assessment, and establishing a collaborative classroom climate. Research cited found significant learning gains when formative assessment practices were used.