We test the existence of changes in the relationship between fertility and schooling in Colombia for women from 30 to 40 years old between 1995 and 2005. For our purpose, we use Poisson Regression Models. Our database is the Demographic and Health Survey from 1995 and 2005. We found a reduction in the fertility during this period and an increase in the educative level of the population. According to our results the total number of children a woman has, keeps an inverse relationship with her educative level, which may be explained by the effects of education on the knowledge of the fertility. We also find that the effect of an additional year of education in 1995 is higher than 2005. Besides, we also find that there are significant rural-urban differences in the determinants on fertility for Colombia’s women in the last decade