HUMAN CAPITAL INVESTMENT, RETURNS TO EDUCATION, AND SUSTAINABLE GROWTH: GLOBAL EVIDENCE AND INSIGHTS FROM UZBEKISTAN

Human capital is widely recognised as a principal driver of productivity, innovation, and sustainable growth; yet in many developing economies the rapid expansion of education has outpaced systematic assessment of its economic returns and labour-market alignment. This study examines the conceptual evolution of human capital theory and the economic effects of investment in education, with particular reference to Uzbekistan. The article combines a structured narrative review of classical and contemporary scholarship, a comparative synthesis of international estimates of the returns to schooling, and a descriptive analysis of official national statistics on higher education for 2015/2016–2025/2026, complemented by the World Bank’s human capital indices. The review confirms that an additional year of schooling yields an average private return of approximately 5–10 percent, with considerable cross-country variation. The Uzbek data reveal an unprecedented expansion: the number of higher education institutions rose from 69 to 222 and enrolment increased 5.4-fold to 1,432.8 thousand, lifting the gross participation rate among those aged 18–23 to 47.7 percent and bringing the system to the threshold of universal higher education. Meanwhile, the number of applicants fell to 732,411 in 2025, the lowest level in seven years, the institutional network contracted for the first time in 2025/2026, and the student-to-academic-staff ratio remained at about 28:1. The findings indicate that the policy priority is shifting from expanding access to ensuring quality, labour-market relevance, and the effective utilisation of graduates’ competencies. The article links global evidence on educational returns with the case of a rapidly reforming Central Asian economy and proposes a balanced policy framework that combines broad-based quality education with targeted support for high-potential talent.