Ukraine ousted Khrushchev and became the Soviet leader from 1964 to 1982. Many prominent Soviet sports players, scientists, and artists came from Ukraine. On 26 April 1986, a reactor in the Chernobyl Nuclear Power Plant exploded, resulting in the Chernobyl disaster, the worst nuclear reactor accident in history. This was the only accident to receive the highest possible rating of 7 by the International Nuclear Event Scale, indicating a "major accident", until the Fukushima Daiichi nuclear disaster in March 2011. At the time of the accident, 7 million people lived in the contaminated territories, including 2.2 million in Ukraine. After the
Education in Ukraine 2017 law "On Education" the language of instruction in Ukrainian schools is the state language, which is Ukrainian (national minorities are guaranteed the right to study in public educational facilities including their language alongside Ukrainian). In 2000/2001 academic year, 70% of students attended Ukrainian-language schools (that is where Ukrainian is the primary language of instruction), while 29% were studying in Russian-language schools. There are schools with instruction in Romanian, Crimean Tatar, Hungarian, and Polish in regions populated by those groups. Historically, the language of instruction has often changed in Ukraine. When Ukraine was part of the Russian Empire, the Ukrainian