a 2015 estimate by the united states central intelligence agency puts the literacy rate in russia at 99.7% (99.7% for men, 99.6% for women). according to a 2016 oecd estimate, 54% of russia's adults (25- to 64-year-olds) have attained a tertiary education, giving russia the second-highest attainment of tertiary education among 35 oecd member-countries. 47.7% have completed secondary education (the full 11-year course); 26.5% have completed middle school (9 years) and 8.1% have elementary education (at least 4 years). highest rates of tertiary education (24.7%) are recorded among women aged 35 to 39 years (compared to 19.5% for men of the same age bracket).