This document summarizes a study examining the associations between education levels and child marriage in Bangladesh, India, Nepal, and Pakistan from 1991 to 2011. Demographic and Health Survey data from those countries were analyzed to assess the effect of highest education level (none, primary, secondary, or higher) on age of marriage for women aged 20-24. The results found that primary education was not protective against child marriage in Bangladesh and Pakistan, but was protective against marriage at age 14 in Nepal. Secondary education was protective against marriage at age 14 in Bangladesh and for younger adolescents in Pakistan. In India, primary and secondary education were protective across all age categories for marriage.