The impact of a universal class-size reduction policy: Evidence from Florida's statewide mandate

Class-size reduction (CSR) mandates presuppose that resources provided to reduce class size will have a larger impact on student outcomes than resources that districts can spend as they see fit. I estimate the impact of Florida's statewide CSR policy by comparing the deviations from prior achievement trends in districts that were required to reduce class size to deviations from prior trends in districts that received equivalent resources but were not required to reduce class size. I use the same comparative interrupted time series design to compare schools that were differentially affected by the policy (in terms of whether they had to reduce class size) but that did not receive equal additional resources. The results from both the district- and school-level analyses indicate that mandated CSR in Florida had little, if any, effect on student achievement.     

Effects of class size on alternative educational outcomes across disciplines

This is the first study to use self-reported ratings of student learning, instructor recommendations, and course recommendations as the outcome measure to estimate class size effects, doing so across 24 disciplines. Fixed-effects models controlling for heterogeneous courses and instructors reveal that increasing enrollment has negative and significant effects on student satisfaction in Sociology, Political Science, Computer Science and Engineering, and Mechanical and Aerospace Engineering. Educational outcomes in Linguistics, Psychology, Biological Sciences, Chemistry, Math, Physics, Cognitive Sciences, Visual Arts, History, and Philosophy are unaffected by class size. Other disciplines, including Economics, have inconclusive findings. No discipline benefits from increasing enrollment.     

Where class size really matters: Class size and student ratings of instructor effectiveness

We examine the impact of class size on student evaluations of instructor performance using data on all economics classes offered at the University of California, Santa Barbara from Fall 1997 to Spring 2004. A particular strength of this data is the opportunity to control for both instructor and course fixed effects. In contrast to the literature examining class size effects on test-based outcomes—where results can vary considerably across specifications—we find a large, highly significant, and nonlinear negative impact of class size on student evaluations of instructor effectiveness that is highly robust to the inclusion of course and instructor fixed effects.     

The effect of kindergarten classroom size reduction on second grade student achievement: Evidence from California

Because classroom size reduction (CSR) and standards based testing were implemented at the same time in California during the mid-1990s, it is difficult to isolate the effects of classroom size on outcomes from the effects of curriculum changes. As a result, the main comparison in this paper is very specific – the effect of reduced sized kindergarten classrooms on test performance in second grade. The main result of the paper is that the effect of classroom size reduction is small, especially when compared to the other determinants of student achievement at the second grade level. There is a very small effect of classroom size reduction on student achievement in reading and math, and no effect in language and spelling. Of the two offsetting effects of CSR controlling for spending – the direct effect of smaller classes and the indirect effect on teacher quality, the class-size effect is larger. Over time, the negative effect on teacher quality is reduced as new teachers gain experience and credentials.     

Kindergarten skills and fifth-grade achievement: Evidence from the ECLS-K

Children enter kindergarten with disparate rudimentary reading and mathematics skills; capabilities for paying attention, sitting still and making friends; mental health; and inclinations for aggressive behavior. The role of these characteristics in producing fifth-grade school achievement is the subject of this paper. We find considerable impacts for school-entry academic skills but, with the exception of a kindergartener's capacity to pay attention, virtually no impacts for the collection of socioemotional skills. This finding holds both for the overall sample and for subgroups defined by race/ethnicity and socioeconomic status. The most powerful pre-school avenue for boosting fifth-grade achievement appears to be improving the basic academic skills of low-achieving children prior to kindergarten entry.     

Measuring the effect of charter schools on public school student achievement in an urban environment: Evidence from New York City

This paper uses student level data from New York City to study the relationship between a public school losing enrollment to charter school competitors and the academic achievement of students who remain enrolled in it. Geographic measures most often used to study the effect of school choice policies on public school student achievement are not well suited for densely populated urban environments. I adopt a direct approach and measure charter school exposure as the percentage of a public school's students who exited for a charter school at the end of the previous year. Depending on model specification, I find evidence that students in schools losing more students to charter schools either are unaffected by the competitive pressures of the choice option or benefit mildly in both math and English.     

Observed characteristics and teacher quality: Impacts of sample selection on a value added model

We measure the impact of observed teacher characteristics on student math and reading proficiency using a rich dataset from Florida. We expand upon prior work by accounting directly for nonrandom attrition of teachers from the classroom in a sample selection framework. We find evidence that sample selection is present in the estimation of the influence of teacher characteristics, but that failure to account for it does not appear to substantially bias estimation. Further, our procedure produces some evidence that more effective teachers are more likely to exit the classroom.     

Early commitment on financial aid and college decision making of poor students: Evidence from a randomized evaluation in rural China

Many educational systems have struggled with the question about how best to give out financial aid. In particular, if students do not know the amount of financial aid that they can receive before they make a decision about where to go to college and what major to study, it may distort their decision. This study utilizes an experiment (implemented by the authors as a Randomized Control Trial) to analyze whether or not an alternative way of providing financial aid—by providing an early commitment on financial aid during the student's senior year of high school instead of after entering college—affects the college decision making of poor students in rural China. We find that if early commitments are made early enough; and they are large enough, students will make less distorting college decisions.     

Math skills and labor-market outcomes: Evidence from a resume-based field experiment

We examine the link between math skills and labor-market outcomes using a resume-based field experiment. Specifically, we send fictitious resumes in response to online job postings, randomly assigning some resumes to indicate stronger math skills, and measure employer responses. The resumes that are randomly assigned to indicate stronger math skills receive more interest from employers than the comparison resumes. Our findings add to the body of evidence showing that stronger math skills positively affect labor-market outcomes.     

Effects of class size reduction in upper grades: Evidence from Seoul,Korea

We study the effects of class size reduction (CSR) in upper grades (10–12) on college entrance exam scores, using merged Korean administrative data. This data set provides a rare opportunity to investigate the effects of high school class sizes on student outcomes. Seoul has maintained strong restrictions on educational choices to achieve the ideal of equal educational opportunities. The identification mainly comes from the large-scale CSR policy implemented in 2002. By using the within-school between-cohort variation in class size intended by the CSR policy, we find that the effects of high school class sizes on test scores are small with tight confidence intervals. We confirm this result by using the additional within-school variation in class size arising from the major division, especially the implicit rule of class allocation between majors. Further, the distributional effects are no different from the average effects either.     

The adverse effects of parents’ school selection errors on academic achievement: Evidence from the Beijing open enrollment program

One major concern with public school open enrollment programs is the potential for parents’ school selection errors to adversely affect their children's academic achievement. In this study of the Beijing middle school open enrollment program, we estimate the degree to which children's school outcomes were negatively affected by the poor choices their parents made during the school selection process. We do this by examining parents’ responses to a survey on school choices combined with actual school applications, school admission records, and High School Entrance Examination test scores for 4717 students entering middle schools in Beijing via randomized lotteries. We find that the children of parents who made judgment errors in school selection were admitted to lower quality schools and achieved lower test scores on the High School Entrance Examination. Parents who had less education, whose children performed at lower levels in primary school, and who were less attentive to teachers’ opinions about schools were more prone to make these errors. Providing assistance to parents, especially those less prepared to make informed choices about school selection, is consequently important for supporting more efficient and equitable open enrollment programs.     

Analyzing the factors that influence persistence rates in STEM field,majors: Introduction to the symposium

To improve our understanding of the factors that influence persistence rates in STEM field majors, the Alfred P. Sloan Foundation provided a grant to the Cornell Higher Education Research Institute in 2007 to study the question. The five papers in the symposium represent the output of the project. This introduction explains the motivation for undertaking the study, describes the questions the researchers asked and the data bases they used in their studies, summarizes their findings, and suggests directions for future research.     

Educational gaps in medical care and health behavior: Evidence from US Natality data

The US Natality files provide information on medical procedures and health related behavior during pregnancy and childbirth. The data set represents nearly the universe of mothers who give birth in the US, providing the most complete coverage possible of medical care and health behavior among a specific patient population. We document gaps in outcomes by education of the mother and the changes in these educational gaps during 1989-2002.     

Sports participation and academic performance: Evidence from the National Longitudinal Study of Adolescent Health

It has been argued that high school sports participation increases motivation and teaches teamwork and self-discipline. While several studies have shown that students who participate in athletic activities perform better in school than those who do not, it is not clear whether this association is a result of positive academic spillovers, or due to the influence of unobservables. Using data from the National Longitudinal Study of Adolescent Health and a variety of statistical techniques designed to distinguish between these hypotheses, we examine the effect of sports participation on several measures of academic performance. Our results provide only limited evidence that sports participation leads to enhanced academic performance.     

The medium term schooling and health effects of low birth weight: Evidence from siblings

Research has shown that low birth weight is linked to infant mortality as well as longer term outcomes. This paper examines the medium term outcomes that may link low birth weight to adult disadvantage using a national longitudinal sample with a large sample of siblings (Add Health). Results show strong effects on several educational outcomes, including early grade repetition, receipt of special education services, and reports of a learning disability. Results for longer term outcomes are suggestive, though less robust and small in magnitude. Overall, the results suggest that medium term educational disadvantages associated with low birth weight are not driven by family level unobservables and do not accumulate into large long-term disadvantage.     

The effects of high school math curriculum on college attendance: Evidence from the NLSY97

Using a sample of youth who graduated from high school in the late 1990s and early 2000s, this paper examines the impact of high school math curriculum on the decision to go to college. Results that control for unobserved differences between students and their families suggest that a more rigorous high school math curriculum is associated with a higher probability of attending college and of attending a 4-year college. The household fixed effect results imply that students who take an advanced academic math curriculum in high school (algebra II or precalculus, trigonometry, or calculus) are about 17 percentage points more likely to go to college and 20 percentage points more likely to start college at a 4-year school by age 21 compared to those students whose highest math class was algebra I or geometry.     

It's easier to pick a good teacher than to train one: Familiar and new results on the correlates of teacher effectiveness

Neither holding a college major in education nor acquiring a master's degree is correlated with elementary and middle school teaching effectiveness, regardless of the university at which the degree was earned. Teachers generally do become more effective with a few years of teaching experience, but we also find evidence that teachers may become less effective with experience, particularly later in their careers. These and other findings with respect to the correlates of teacher effectiveness are obtained from estimations using value-added models that control for student characteristics as well as school and (where appropriate teacher) fixed effects in order to measure teacher effectiveness in reading and math for Florida students in fourth through eighth grades for eight school years, 2001-2002 through 2008-2009.     

Immigration and student achievement: Evidence from Switzerland

This paper investigates empirically whether immigrant students in Switzerland perform poorly compared to their native counterparts and provides some explanations. Using a national sample of the 2000 PISA (Programme for International Student Assessment) database, we first analyze the impact of immigrant status on pupils’ achievement. We find a negative and significant impact of immigrant status on test scores in reading, mathematics and science literacy, even after controlling for a set of characteristics. We then decompose the observed reading score gap between Swiss and immigrant students to identify whether gaps in endowments explain test score differences along the distribution. Lower endowments explain most of the achievement gap in reading between Swiss and second-generation immigrants. However, lower returns explain around one quarter of the achievement gap between Swiss and first-generation immigrants for the weakest pupils.     

Teaching on the internet: Lessons learned from a substantive criminal law class

Universities across the United States offer classes taught entirely over the Internet. Teaching with this medium, however, is still relatively new so faculty and administrators need to understand the salient issues that attend to course offerings in a “virtual classroom.” This paper discusses the benefits and challenges that arose when a Substantive Criminal Law course was developed and taught on the Internet in the Fall of 1997. Pedagogical and technical issues that arose during the development and implementation of the course are addressed. Policy recommendations are also suggested.     

Risk and career choice: Evidence from Turkey

In this paper, we examine the college major choice decision in a risk and return framework using university entrance exam data from Turkey. Specifically we focus on the choice between majors with low income risk such as education and health and others with riskier income streams. We use a unique dataset that allows us to control for the choice set of students and parental attitudes towards risk. Our results show that father's income, self-employment status and social security status are important factors influencing an individual in choosing a riskier career such as business over a less risky one such as education or health.