Class levels refer to the different stages or grades in an educational system, typically used to categorize students based on their age or academic progress. In schools, class levels often range from kindergarten for young children to high school for older teens. Each level has specific curricula and learning objectives designed to meet the developmental needs of students. In higher education, class levels can indicate a student's progress toward a degree. For example, undergraduate students may be classified as freshmen, sophomores, juniors, or seniors, depending on the number of credits they have earned. This classification helps institutions manage course offerings and academic advising.