This is a chapter of a textbook ("Handbook of Research on Student Engagement") that describes the concept of student engagement, which is how involved a student is in their learning, and how it applies to self-determination theory. There are many different concepts discussed, ranging from different motivational theories to why student engagement is important in education. One of the main ideas that is worth looking into regarding SDT is the idea that the intrinsic motivation a student has can affect their learning environment positively so that it responds to the student to encourage these intrinsic motivations (teacher feedback, interesting learning assignments) which in turn increases student engagement so that they are actively involved and immersed in the class. It is a cyclical relationship that, if done positively, can lead to a better learning experience for teacher and students according to the principles of SDT.