Studies increasingly indicate that some of the characteristics of individuals are jointly determined with marital status, fertility, and labor supply. This study focuses on the effect of schooling on marital status. A Hausman-type test shows that schooling cannot be legitimately treated as an exogenous determinant of marriage and divorce. It is shown that if schooling is treated as an exogenous variable, the negative effect of schooling on the odds of marriage is underestimated. Further, the results indicate that schooling has a significant negative effect on divorce if it is treated as an exogenous variable; the coefficient for schooling is positive if it is treated as an endogenous variable.