The Policy Research Working Paper Series disseminates the findings of work in progress to encourage the exchange of ideas about development issues. An objective of the series is to get the findings out quickly, even if the presentations are less than fully polished. The papers carry the names of the authors and should be cited accordingly. The findings, interpretations, and conclusions expressed in this paper are entirely those of the authors. They do not necessarily represent the views of the International Bank for Reconstruction and Development/World Bank and its affiliated organizations, or those of the Executive Directors of the World Bank or the governments they represent. Policy Research Working Paper 9001 Mexico's conditional cash transfer program, PROSPERA, has demonstrated short-and medium-term positive effects on health and education, including: increased children's height; decreased risky behaviors among adolescents, including the postponement of parenthood; and increased years of schooling. This paper explores whether these effects lasted in the long-term and translated into positive changes in outcomes across generations. This study uses the most recent PROSPERA Evaluation Survey (ENCEL 2017) and combines it with previous waves and with the 1997 Socioeconomic Characteristics Survey (ENCASEH). Using intergenerational mobility analysis and quasi-experimental methods, this study finds strong evidence of positive absolute intergenerational mobility in height and years of schooling. The findings show that, on average, male offspring are 2.8 centimeters taller and have 5.3 more years of schooling than their providers (usually their parents), while female offspring are 4.1 centimeters taller and have 5.7 more years of schooling than their providers. These intergenerational gains are relevant not only because they reflect improvements in human capital, but also because these improvements have a positive return to investment. The study finds that a 1 percent increase in height is associated with a 10.7 and 8.8 percent increases in hourly wages for men and women, respectively. The analysis finds that a one-year increase in schooling is associated with 3.4 and 4.8 percent increases in hourly wages for men and women, respectively. These results show that PROSPERA has been successful in helping children and youth build human capital through better health and education, which has led to positive returns in the labor market.