Since the beginning of the school year in Ukraine, all public schools have not offered teaching in the Russian language in their curriculum. It was based on a decision passed by the country’s parliament in 2017. The law "On Education" adopted in September 2017 envisages that all schooling, along with other public services, could be provided in the Ukrainian language only. The law gave a three-year transition period to fully implement the requirements. "Persons belonging to national minorities of Ukraine are guaranteed the right to education in municipal educational institutions of pre-school and primary education in the language of the national minority they belong to and in the official language of the State", the law declares. The exception is made for the minorities who speak Hungarian, Greek, Polish, or Crimea Tatars, and 40% of the curricular is allowed to be preserved for those languages. However, the Russian language doesn't fall into any of those categories. According to the 2001 census, Russian speakers in Ukraine account for 14 million, or 30% of the country's entire population. The Eastern part of the country is predominantly Russian-speaking.