Hyperbolic variety law in educational systems

The article considers the law of hyperbolic rank distribution of objects in educational systems-coenoses as a variety law. W. Ashby's principle of variety for controlling systems, known as Law of Requ isite Variety, is currently recognized as a universal control law which is true for educational systems as well. It took a well-defined mathematical shape of the law of hyperbolic rank distribution. It results in 80-20 rule or Pareto's principle. The law of hyperbolic rank distribution is valid for other branches of knowledge, so its study is important in the educational programs of different levels.