By 2015, world life expectancy at birth was 73.8 years for women and 69.6 years for men, more than double the average life expectancy in 1900. Data from 919 household surveys spanning 147 economies conducted by the World Bank between 1960 and 2012 are used in this study to evaluate the relationship between rising life expectancy at birth and years of schooling for successive birth cohorts. Mohammad Hoque, Elizabeth King, Claudio Montenegro, and Peter Orazem find positive effects in increased life expectancy at birth on lifetime completed years of schooling in 95 percent of cases, with significant negative effects found in only 2.3 percent. Rising life expectancy at birth for a birth cohort thus has intergenerational benefits in that the schooling of the cohort's children’s also increases.
http://documents.worldbank.org/curated/en/466891504011476420/pdf/WPS8175.pdf

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