The nineteenth and twentieth century saw two waves of state schooling laws. The first wave focused on children to age 14 and the second wave focused on high school. Using the full count 1940 census and a new coding of state laws, this paper provides new estimates of the effects of the first wave of laws. The analysis focuses on cohorts of prime working age between 1910 and 1940. IV estimates of returns to schooling range from 0.067 to 0.077. Quantile IV estimates show the returns were largest for the lowest quantiles, and were generally monotonically decreasing for higher quantiles.

中文翻译：

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第一波美国州义务出勤法中的法律，教育成果和返校证明

十九世纪和二十世纪见证了两波州教育法。第一波针对14岁以下的儿童，第二波针对高中。利用1940年的全面人口普查和州法律的新编码，本文提供了对第一波法律影响的新估计。该分析着重于1910年至1940年之间的主要工作年龄组。IV对入学回报的估计范围为0.067至0.077。四分位数IV估计值显示，最低分位数的回报最大，而高分位数的回报通常单调下降。