Marriage in India is largely controlled by hanging norms such as arranged marriage and sociocultural markers such as the caste system. Caste endogamy, i.e., marrying within the same caste, remains one of the strongest pillars of the caste system in the Indian society. This study explores whether childhood exposure to dynamics of school expansion in rural India had any causal impact on the increase in ICM exploiting variation in school openings across different locations at different times. A one standard deviation (SD) change in school openings (per village) increases ICM by 5.67%. Exploring the underlying mechanisms, we do not find completed years of education to be the driver, suggesting contact theory, delayed age at marriage, and/or education assortativity are more plausible mechanisms. These results indicate that education, development, and broader modernization forces can be a driver of family change in India, albeit their relevance may be lower than in other low- and middle-income countries (LMICs).