How Financial Aid Affects Persistence

The Pell Grant program is the largest means-tested financial assistance available to postsecondary students across the United States, yet researchers have only limited evidence on the causal effects of these grants. This paper examines the effect of Pell grants on student persistence after the first year. The paper uses unique, student-level data from all public colleges in Ohio. The data include detailed financial data which allow me to identify small discontinuities in the Pell grant formula. I exploit these discontinuities to identify the causal effects of the voucher. The results based on discontinuity approaches suggest that Pell grants reduce college drop-out behavior. The results in this paper support other evidence that find a relationship between need-based aid and college completion (e.g. Dynarski 2002, Turner and Bound 2002).

Lessons from private-school vouchers in Columbia

Educational vouchers

Analysis of satellite data for studies related to ionospheric plasma research Semiannual status report, 1 May 1967 - 30 Apr. 1968

Preliminary data analysis of satellite-ionospheric plasma interaction

Wing-slope techniques for the analysis of Langmuir probe characteristics

Wing-slope positive ion temperature measurement technique for Langmuir probe volt-ampere characteristic analysi

A First Order Technique for the Measurement of Vehicle Potential in the Ionosphere

Cylindrical Langmuir probe to measure artificially induced variations of vehicle potential in ionospher

Using Experimental Economics to Measure the Effects of a Natural Educational Experiment on Altruism

Economic research examining how educational intervention programs affect primary and secondary schooling focuses largely on test scores although the interventions can affect many other outcomes. This paper examines how an educational intervention, a voucher program, affected students' altruism. The voucher program used a lottery to allocate scholarships among low-income applicant families with children in K-8th grade. By exploiting the lottery to identify the voucher effects, and using experimental economic methods, we measure the effects of the intervention on children's altruism. We also measure the voucher program's effects on parents' altruism and several academic outcomes including test scores. We find that the educational intervention positively affects students' altruism towards charitable organizations but not towards their peers. We fail to find statistically significant effects of the vouchers on parents' altruism or test scores.

Do College Instructors Matter? The Effects of Adjuncts and Graduate Assistants on Students' Interests and Success

One of the most pronounced trends in higher education over the last decade has been the increased reliance on instructors outside of the traditional full-time, Ph.D.-trained model. Nearly 43 percent of all teaching faculty were part-time in 1998, and at selective colleges, graduate assistant instructors teach over 35 percent of introductory courses. Critics argue that these alternative instructors, with less education and engagement within a university, are causing the quality of education to deteriorate and may affect student interest in a subject. However, little research exists to document these claims. This paper attempts to fill this void using a unique dataset of students at public, four-year colleges in Ohio. The paper quantifies how adjunct and graduate assistant instructors affect the likelihood of enrollment and success in subsequent courses. Because students with alternative instructors may differ systematically from other students, the paper uses two empirical strategies: course fixed effects and a value-added instructor model. The results suggest that adjunct and graduate assistant instructors generally reduce subsequent interest in a subject relative to full-time faculty members, but the effects are small and differ by discipline. Adjuncts and graduate assistants negatively affect students in the humanities while positively affecting students in some of the technical and professional fields.

Addressing the Needs of Under-Prepared Students in Higher Education: Does College Remediation Work?

Each year, thousands of students graduate high school academically unprepared for college. As a result, approximately one-third of entering postsecondary students require remedial or developmental work before entering college-level courses. However, little is known about the causal impact of remediation on student outcomes. At an annual cost of over $1 billion at public colleges alone, there is a growing debate about its effectiveness. Who should be placed in remediation, and how does it affect their educational progress? This project addresses these critical questions by examining the effects of math and English remediation using a unique dataset of approximately 28,000 students. To account for selection biases, the paper uses variation in remedial placement policies across institutions and the importance of proximity in college choice. The results suggest that students in remediation are more likely to persist in college in comparison to students with similar test scores and backgrounds who were not required to take the courses. They are also more likely to transfer to a higher-level college and to complete a bachelor's degree.