One third of the U.S. undergraduate students switch their major within the first three years of their college experience, which suggests a large uncertainty in ability students face when they arrive at college. This paper examines the impact of uncertainty in academic ability and the incentive to maintain a high cumulative GPA on college courses and major choices. The taste for maintaining a high GPA can prevent students from taking courses that maximize the amount of information obtained about their uncertain academic ability. To identify students' taste for maintaining a high GPA, I use a policy variation that expanded the pass/fail grading option during the COVID-19 pandemic at lage public universities in Texas. I document that students were 1.2% - 5.6% more likely to enroll in STEM courses when their school continued to offer the expanded pass/fail grading option, which reduced the risk of disclosing bad grades for the students. Based on the empirical facts, I develop a dynamic model of college course and major choices, incorporating factors such as taste for maintaining a high GPA and ability learning. I carefully model grading equations using the statistical relationship between the Binomial and Generalized Beta distributions to capture how grade inflation weakens grade signals about students' ability. The model is estimated to match the educational decisions of students at a large flagship state university in Texas. Counterfactual analysis highlights the implications of grading policies aimed at reducing uncertainty in academic ability and equalizing grading standards across departments, which can lower dropout rates and increase STEM graduation rate up to 22%.
A large and growing share of students arrive at school as English language learners (ELL). In Texas, schools provide bilingual education or an English as a second language programs for these students. Using a regression discontinuity design based on a quasi-experimental policy variation in Texas, this paper examines the effect of exposure to bilingual education in 1st grade on students' test scores and college enrollment. We find no effect of bilingual education in first grade on elementary school standardized test scores but large significant effects on college enrollment for both ELL and non-ELL students: bilingual education increases four-year university enrollment for ELL and non-ELL students by 6.4 and 6.8 p.p., respectively. The positive effects for both student groups in the long-run suggests that bilingual education has positive effects that are not well measured by short-run test scores for ELL students, and these effects spill-over to the outcomes on non-ELL students.
In this paper, we describe the contents and methods of “Korea Patent DataProject (KoPDP)”. The project collects all utility patents granted from the Korea Intellectual Property Office (KIPO) for the period 1948-2016 and the US Patentand Trademark Office (USPTO) for the period 1976-2017. The project alsomatches their assignees to firms in DataGuide 5.0, a Korean financial database.The resulting dataset includes total 14,803 listed and non-listed Korean firmsmatched with their Korean and US patents, in addition to a host of accountingand financial information. Over 45% of all sample KIPO patents and 87% of USpatents assigned to Korean assignees are matched. We explain the detail of ourmatching procedures and also provide a coherent industry classification system for both sets of patents.
This paper purports to scrutinize the evolving trends of major technologies that have shaped the world's technology frontier, and at the same time, measure relative standings of major industrial nations in their innovative capacity in production of those technologies. We consider all (over 5 million) utility patents granted by the US Patent and Trademark Office (USPTO) over the period of 1976-2015. In analysis, we find the continued dominance of US, the steady performance of Japan, the signs of European decline, and the emergence of new economies that include Korea, Taiwan and Israel. By considering the most popular technologies per each decade, we observe a clear pattern in the evolution of world economic structure, most notably, the IT revolution. Interestingly, it is precisely in these IT-related technologies in which Korea have performed especially well. In the fastest growing technologies of the most recent decade, however, Korea's performance thus far bucks this rosy trend. Korea's innovative capacity is not as evenly distributed across all technologies as other advanced nations. US, Japan, Europe, and other Western economies, as well as Israel, all exhibit solid and steady performance in all our rankings.