Encyclopedia
Optional
Optional — not mandatory for a given level of education, profession, specialty, or field of study (ceased to be in force as of 2019-03-06)1.
Federal Law No. 273-FZ of December 29, 2012 "On Education in the Russian Federation," amended on May 7, 2013, Article 34, paragraph 5, ceased to be in force as of March 6, 2019 // Official Gazette of the Russian Federation. 2012. No. 53. Item 7598. ↩