The book provides new insights into written corrective feedback by describing students’ expectations as well as mediating factors that influence their engagement with it. The book draws on an extensive dataset to illustrate secondary school students’ behavioural, cognitive and emotional engagement with written corrective feedback and the extent to which mediating factors, such as teachers, peers, feedback options, attitudes and emotions, foster or hinder it. It shows why teachers need to provide students with the purpose of the corrective feedback they provide, explain how such feedback works and introduce strategies that can be employed to engage with it. Based on the finding that a combination of several feedback types is essential to ensure learner engagement, the book also provides an extensive description and multiple authentic examples of the Engagement-Feedback-Mediator Model that was developed in the context of this study.