At the beginning the author presents the benefits of education for the individual, society and economy. On average better educated people have higher earnings and lower risks of poverty. However, education has also positive effects on economic growth. Furthermore the author presents, on the basis of Slovenian and international statistical data, the trends in participation of adults in education and the education structure of adult population in Slovenia after 2000. The participation of adults, aged 25 – 64 years in life-long learning in Slovenia is relatively high compared to other European countries and European average; it totaled 14.8% in 2007. Also, the participation of adults in secondary and tertiary education is above the European av...