The main objective of this paper has been to investigate macroeconomic factors influencing the schooling inequality across 69 countries during the period of 1975 to 2005 with five-year intervals period. Relying on 201 observations, we found that education expansion, ratio of capital to GDP, and ratio of female to male primary enrollment statistically significantly play as powerful equalizers in education distribution .Previous-year educational inequality, per capita real income, and growth rate of rural population play as significant disequalizers of educational inequality. There are two major findings. Firstly we found that factors directly involved to schooling like enrolment rate or education expenditures are not significant while the factors indirectly involved to schooling have significant impacts on educational inequality. Secondly, we found quadratic (U-shape) relationship between rural growth rate and educational inequality. So the higherrural population growth rate brings increasing or decreasing of educational inequality with turning point at rate -1.39.