
Assessment for learning focuses on the gap between where a learner is in their learning, and where they need to be – the desired goal. This can be achieved through processes such as sharing criteria with learners, effective questioning and feedback.
Black and Wiliam define assessment for learning as 'all those activities undertaken by teachers and/or by their students, which provide information to be used as feedback to modify the teaching and learning activities in which they are engaged'.
These 'big ideas' can be found within the four key features on the assessment for learning side of the AifL triangle.