The extent of educational institutions' Ukrainization varies in the different regions of Ukraine. In the 16 western oblasts (provinces) of Ukraine there are 26 Russian language schools out of 12,907 and in Kiev six out of 452 schools use Russian as their primary language of instruction,</ref> (according to a 2006 survey, Ukrainian is used at home by 23% of Kievans, as 52% use Russian and 24% switch between both). In the Donets Basin region the percentage of students receiving education in Russian roughly corresponds to the percentage of population who considers Russian as their native language and in Crimea the overwhelming majority of secondary schools students are taught in Russian. The distribution is similar in the institutes of the higher education while the latter are somewhat more Ukrainianized.