Class level is a term used to describe the hierarchical structure of a class or group. It is usually determined by a combination of factors such as academic performance, age, and experience. The RANK of a class level is typically represented by a four-letter code, such as A, B, C, or D. This code is used to indicate the relative standing of a student or group within the class. For example, an A-level student would be considered to have higher standing than a B-level student.