The data are from the 2018 General Social Survey, a representative sample of adults in the U.S. All three education variables are measured in years (12 years for nishing high school, 14 years for an associate's, 16 years for finishing a Bachelor's, 18 years for a Master's, etc.). The born in the US. variable is coded yes = 1 and no = 0. Here is a table with the regression result: Multiple Regression results from model of child's education (N = 880, R-squared = Variable tstatistic ls p-value