a greater emphasis on vocational and technical training rather than academic training in order to help citizens gain skills that would supply the country's economic needs. Even though there were major criticisms on behalf of the public for this emphasis on vocational training due to a clashing with Confucian values, the state continued to strengthen vocational education, especially after the shift in industrialization to heavy chemical and machine industries in the 70s. The 1960s and 70s experienced turmoil in education systems due to public resistance and the uncooperativeness of private schools with the state as they attempted to supply public demand. While the state was able to fulfill many of its economic goals, it came at a great social and political cost like the depopulation of rural areas and President Park's assassination. Most observers agree that South Korea's spectacular progress in modernization and economic growth since the Korean War is largely attributable to the willingness of individuals to invest a large amount of resources in education: the improvement of "human capital". The traditional esteem for the educated man, now extends to scientists, technicians, and others working with specialized knowledge. Highly educated technocrats and economic planners could claim much of the credit for their country's economic successes since the 1960s. Scientific professions were generally regarded as the most prestigious by South Koreans in the 1980s. Statistics demonstrate the success of South Korea's national education programs. In 1945 the adult literacy rate was estimated at 22 percent; by 1970 adult literacy was 87.6 percent and, by the late 1980s, sources estimated it at around 93 percent. Although only primary school (grades one through six) was compulsory, percentages of age-groups of children and young people enrolled in secondary level schools were equivalent to those found in industrialized countries, including Japan. Approximately 4.8 million students in the eligible age-group were attending primary school in 1985. The percentage of students going on to optional middle school the same year was more than 99 percent. Approximately 34 percent, one of the world's highest rates of secondary-school graduates attended institutions of higher education in 1987, a rate similar to Japan's (about 30 percent) and exceeding Britain's (20 percent). Government expenditure on education has been generous. In 1975, it was 220 billion won, the equivalent of 2.2 percent of the gross national product, or 13.9 percent of total government expenditure. By 1986, education expenditure had reached 3.76 trillion