When a student lacks interest in class material, it negatively impacts their behavior, grades, relationships, and commitment. They are less likely to put in full effort on assignments and projects, which can lead to failing grades if not addressed. It also takes an emotional toll on the student and can make them feel pessimistic. To do well, students need to recognize when they are losing interest and recommit themselves to accomplishing all class requirements, even if the material is not always interesting to them. This helps them develop responsibility and avoid letting others down.