R. M. Orzhentsky – professor of Demidov Law Lyceum

Aim. A study of the biography and main stages of scientific work of the Russian and Polish scientist R. M. Orzhentsky. Methodology. During the writing of the article, the principles of objectivity, scientificity and historicism were applied. Results. Based on the results of the conducted research, the main facts of the biography of the famous Russian scientist-encyclopedist R.M. Orzhentsky were clarified. The main attention in the article is paid to the Yaroslavl period of the scientist's activity. Based on the study of a wide range of historical sources and research literature, the creative heritage of R. M. Orzhentsky the lawyer is covered. At the same time, the article indicates that it was at the Demidov Law Lyceum that R. M. Orzhentsky received all-Russian recognition as a statistician, in particular, a pioneer in the field of mathematical statistics, as well as a bright representative of the psychological direction in political economy. It is separately emphasized that Orzhentsky was a remarkable teacher. At the same time R. M. Orzhentsky, as a professor at the Demidov Law Lyceum, transferred his psychological theory to the educational process. Research implications. The results of the study can be used in higher education institutions when teaching general courses on Russian history, the history of public education in the Russian Empire, the history of the Yaroslavl region, and conducting practical classes on these academic disciplines.