Rank systems are structured methods used to categorize individuals or items based on specific criteria, such as performance, skill, or status. Commonly found in various fields like education, sports, and the military, these systems help establish a clear hierarchy, making it easier to identify leaders or top performers. In a rank system, each level typically has defined responsibilities and privileges. For example, in a military rank system, soldiers are assigned ranks like private, sergeant, or captain, which dictate their roles and authority. This organization promotes order and efficiency within groups or organizations.