Learning models are an important starting point for assessment and feedback. A basic three-step model from surface knowledge to cross-linked concepts helps learners understand how they can improve and deepen their learning. Taxonomies that go into more detail of the cognitive processes are a useful tool for teachers when preparing a lesson (e.g. Bloom’s Taxonomy of educational objectives). But when it comes to summative and formative feedback in all its varieties the SOLO-Taxonomy is a much better choice.