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Goodman, Joshua

Proponents of the recent and widely adopted Common Core State Standards argue that high quality curricular standards are critical to students’ educational success. Little clear evidence exists, however, linking the quality of such standards to student achievement. I remedy this by connecting data on state-level student achievement from 1994-2011 with measures of the quality of states’ curricular standards as judged by two independent organizations at three different moments in time. I show that, within states, changes in the quality of standards have little impact on overall student achievement. Improved standards do, however, raise achievement of 8th graders in low-scoring states, particularly for low-scoring students. Given the known weaknesses of U.S. middle schools, this result suggests that standards may be beneficial in settings where pedagogy would otherwise be poor.

Labor economists know that a year of schooling raises earnings but have little evidence on the impact of specific courses completed. I identify the impact of math coursework on earnings using the differential timing of state-level increases in high school graduation requirements as a source of exogenous variation. The increased requirements induced large increases in both the completed math coursework and earnings of blacks, particularly black males. Two-sample instrumental variable estimates suggest that each additional year of math raised blacks' earnings by 5-9%, accounting for a large fraction of the value of a year of schooling. Closer analysis suggests that much of this effect comes from black students who attend non-white schools and who will not attend college. The earnings impact of additional math coursework is robust to changes in empirical specification, is not driven by selection into the labor force, and persists when earnings are conditioned on educational attainment. The reforms close one fifth of the earnings gap between black and white males. Estimates for whites are similar to those of blacks but are much noisier due to the reforms' weaker impact on white students' coursework. These results suggest that math coursework is an important determinant of the labor market return to schooling, that simple minimum requirements largely benefit low-skilled students, and that more demanding requirements might be necessary to improve the outcomes of high-skilled students.

Research consistently shows that college choice in an important predictor of college completion and labor market outcomes. These longer term implications of college choice, combined with suboptimal choices made by many low-income but high-achieving students, has sparked several large-scale initiatives to improve college choice. Strategically targeting those students most susceptible to making questionable decisions in the college-choice process remains challenging, as variation in college choice is largely unexplained by easily measurable socio-demographic characteristics. This paper explores the potential to improve upon existing models and, more generally, to better understand college choice by documenting the similarities in college enrollment patterns between younger and older siblings. To do so, we identify siblings in the millions of SAT test-takers between the 2004 and 2011 high school graduation cohorts. We find that younger siblings enroll in the same college as their older sibling 21.2 percent of the time. Also, conditional on their own SAT scores, we find that younger siblings whose older siblings enrolled in four-year colleges and the most selective colleges are 17.4 and 21.3 percentage points, respectively, more likely to themselves enroll in four-year and the most selective colleges. Overall, adding characteristics and enrollment decisions of older siblings to standard college choice models improves model fit and consequently, are valuable pieces of information for explanatory and predictive power.

School districts across the country have struggled to increase the proportion of students taking algebra by 8th grade, thought to be an important milestone on the pathway to college preparedness. We highlight key features of a research collaboration between the Wake County Public School System and Harvard University that have enabled investigation of one such effort to solve this problem. In 2010, the district began assigning middle school students to accelerated math coursework leading to 8th grade algebra on the basis of a clearly defined measured of prior academic skill. We document two important facts. First, use of this new rule greatly reduced the relationship between course assignment and student factors such as income and race while increasing the relationship between course assignment and academic skill. Second, using a regression discontinuity analytic strategy, we show that the assignment rule had strong impacts on the fraction of students on track to complete algebra by 8th grade. Students placed in accelerated math were exposed to higher-skilled peers but larger class sizes. We describe future plans for assessing impacts on achievement and high school course-taking outcomes.

Low college enrollment rates among low-income students may stem from a combination of credit constraints, low academic skill, and low-quality schools. Recent Massachusetts data allow the first use of school district fixed effects in the analysis of credit constraints, leading to four findings. First, low-income students in Massachusetts have lower intended college enrollment rates than higher income students but also have dramatically lower skills and attend lower-quality school districts. Second, inclusion of skill controls greatly reduces but does not eliminate this intended enrollment gap. Third, inclusion of school district fixed effects has little further impact, with low-income students eight percentage points less likely to intend enrollment than higher income students of the same skill and from the same school district. Fourth, medium- and high-skilled low-income students appear the most constrained. State governments could use the methods employed here to target financial aid more efficiently.

In large classes, it is challenging for faculty to get to know students and vice versa. Though some students participate actively in class or take advantage of office hours, others remain relatively quiet and thus less familiar to faculty during the semester. More problematically, often it is the students that faculty get to know least during the semester who are precisely the ones for whom a deeper relationship with a faculty member might be most beneficial. This paper describes a simple study of the impact of two forms of personalized interventions on student performance in one section of a quantitative course at the Harvard Kennedy School. How might faculty effectively engage students in large classes, such as core classes, where students may have relatively little interaction with the teacher? Do low-cost interventions early in the semester improve such engagement and, potentially, student performance?

The Federal government has spent billions of dollars to support turnarounds of low-achieving schools, yet most evidence on the impact of such turnarounds comes from high-profile, exceptional settings and not from examples driven by state policy decisions at scale. In this paper, we study the impact of state takeover and district-level turnaround in Lawrence, Massachusetts. Takeover of the Lawrence Public School (LPS) district was driven by the state’s accountability system, which increases state control in response to chronic underperformance. We find that the first two years of the LPS turnaround produced large achievement gains in math and modest gains in reading. Our preferred estimates compare LPS to other low income school districts in a differences-in-differences framework, although the results are robust to a wide variety of specifications, including student fixed effects. While the LPS turnaround was a package of interventions that cannot be fully separated, we find evidence that intensive small-group instruction led to particularly large achievement gains for participating students.

Does access to 4-year colleges affect degree completion for students who would otherwise attend 2-year colleges? Admission to Georgia’s 4-year public sector requires minimum SAT scores. Regression discontinuity estimates show that access to this sector increases 4-year college enrollment and college quality, largely by diverting students from 2-year colleges. Access substantially increases bachelor’s degree completion rates for these relatively low-skilled students. SAT retaking behavior suggests students value access to 4-year public colleges, though perhaps less than they should. Our results imply that absolute college quality matters more than match quality, and they suggest potential unintended consequences of free community college proposals.

We study an intensive math instruction policy that assigned low-skilled 9th graders to an algebra course that doubled instructional time, altered peer composition and emphasized problem solving skills. A regression discontinuity design shows substantial positive impacts of double-dose algebra on credits earned, test scores, high school graduation and college enrollment rates. Test score effects under-predict attainment effects, highlighting the importance of long-run evaluation of such a policy. Perhaps because the intervention focused on verbal exposition of mathematical concepts, the impact was largest for students with below average reading skills, emphasizing the need to target interventions toward appropriately skilled students.

We analyze a Massachusetts merit aid program that gives high-scoring students tuition waivers at in-state public colleges with lower graduation rates than available alternative colleges. A regression discontinuity design comparing students just above and below the eligibility threshold finds that students are remarkably willing to forgo college quality and that scholarship use actually lowered college completion rates. These results suggest that college quality affects college completion rates. The theoretical prediction that in-kind subsidies of public institutions can reduce consumption of the subsidized good is shown to be empirically important.