Heterogeneous Returns to U.S. College Selectivity and the Value of Graduate Degree Attainment Staff Working Paper 2013-46 Mai Seki Existing studies on the returns to college selectivity have mixed results, mainly due to the difficulty of controlling for selection into more-selective colleges based on unobserved ability. Content Type(s): Staff research, Staff working papers Topic(s): Labour markets JEL Code(s): C, C3, C30, I, I2, I21