A ranking system is a method used to evaluate and organize items, individuals, or entities based on specific criteria. This system assigns positions or scores, allowing for easy comparison. Common examples include sports leagues, academic grading, and online reviews, where participants or products are ranked according to performance, quality, or popularity. Ranking systems can be found in various fields, such as education, where students are ranked based on their grades, or in business, where companies may be ranked by revenue or customer satisfaction. These systems help users make informed decisions by highlighting the best options available.