This paper investigates the effects of California's billion-dollar class-size-reduction program on student achievement. It uses year-to-year differences in class size generated by variation in enrollment and the state's class-size-reduction program to identify both the direct effects of smaller classes and related changes in teacher quality.…

This paper uses an earnings function to model how class size affects the grade students earn. It tests the model using an ordinal logit with and without fixed effects on 363,023 undergraduate observations. It finds that class size negatively affects grades. Average grade point average declines as class size increases, precipitously up to class…

Recent research from randomized experiments on class size points to positive effects of small classes that persist for several years, but the evidence about the social distribution of effects is less clear. Some scholars have contended that the immediate effects of small classes are larger for minorities and for disadvantaged persons (e.g., J. D.…

Tennessee's Project STAR (Student Teacher Achievement Ratio) randomly assigned 7,000 K-3 students to small classes (13-17 pupils), regular classes (22-26 pupils), and regular-with-aide classes. Small classes ameliorate large schools' effects, reduce grade retention and discipline problems, benefit minority students substantially, allow students…

Conducted a 6-year followup of almost 4,000 students in Project STAR in Tennessee, a 4-year, large-scale randomized experiment on the effects of class size. Though follow-up data could not be obtained on more than one-half of the students, class size effects persisted for at least 6 years and remained large enough to be of importance for…

Most education research has confirmed that small classes yield benefits. Research also has revealed nuances about how and when small classes will work best, where an investment will result in maximum return, and exactly how many students a "small" class should have. The details of these findings can help policymakers strike a practical…

Between 1985 and 1989, the Student Teacher Achievement Ratio (STAR) Project studied the effect of class size on student achievement in Tennessee schools. The study examined: (1) small classes of 13 to 17 students per teacher; (2) regular classes of 22 to 25 students per teacher; and (3) regular classes with a teacher's aide. The sample included…

The effects of class size on academic achievement have been studied for decades. Although the results of small-scale, randomized experiments and large-scale, econometric studies point to positive effects of small classes, some scholars see the evidence as ambiguous. Recent analyses from a 4-year, large-scale, randomized experiment on the effects…

Class size reduction has been shown to, among other things, improve academic achievement for all students and particularly for low-income and minority students. With the No Child Left Behind Act's heavy emphasis on scientifically based research, adequate yearly progress, and disaggregated results, one wonders why all children aren't enrolled in…

"Straight A's: Public Education Policy and Progress" is a biweekly newsletter that focuses on education news and events both in Washington, DC and around the country. The following articles are included in this issue: (1) It's Education, Stupid: Greenspan Stresses the Importance of Education to Improving Job Prospects, Incomes, and…