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Working paper

Heterogeneity of the educational system: an introduction to the problem

We analyze a heterogeneity of the educational system on the basis of one parameter: input grades of  university students. We propose a mathematical model based on the construction of universities’ interval  order. We use the Hamming distance to evaluate the heterogeneity of the educational system, and the Unified  State Examination (USE) scores of Russian students to illustrate the application of the model. We show that  institutions taking weak students turn the whole system of universities into a poorly structured nonhomogeneous  system. In contrast, after deleting the weakest part, the remaining set of universities becomes a well-structured  system.