The document discusses assessment for learning (AfL) and its purposes. It defines AfL as using assessment to help teachers modify their teaching to differentiate instruction for individual students. The goal is for teachers to gain insights into how students learn in order to target teaching effectively. Assessment as learning focuses on developing student metacognition so students can self-assess their learning. Assessment of learning confirms student learning against standards. The document emphasizes balancing these purposes of assessment and shifting more responsibility for assessment to students.