The study of life satisfaction of diverse countries is becoming increasingly important. Studies have shown that people who are satisfied with their lives are positive about other aspects of their lives such as their health. So it is important to examine the factors that can lead to life satisfaction. This study examines the relationships between education and life satisfaction across countries. Thirty-five countries are included in the study; the results show that life satisfaction is higher in countries where people have more education. Years of education are predicted by enrollment rates at the secondary and tertiary levels. Based on the findings of this study, educators and policy-makers should encourage people to continue their education.