In Praise of Smaller Schools

We are in the midst of a nationwide search for a single magic bullet in education. But the more evidence that is gathered, the more obvious it becomes that no such single magic bullet exists.

That said, a new study (abstract; PDF) on school size -- not class size, but school size -- is worth a look. Here's the abstract; I have bolded the most relevant conclusions:

One of the most wide-ranging reforms in public education in the last decade has been the reorganization of large comprehensive high schools into small schools with roughly 100 students per grade.  We use assignment lotteries embedded in New York City's high school match to estimate the effects of attendance at a new small high school on student achievement. More than 150 unselective small high schools created between 2002 and 2008 have enhanced autonomy, but operate within-district with traditional public school teachers, principals, and collectively-bargained work rules.  Lottery estimates show positive score gains in Mathematics, English, Science, and History, more credit accumulation, and higher graduation rates.  Small school attendance causes a substantial increase in college enrollment, with a marked shift to CUNY institutions.  Students are also less likely to require remediation in reading and writing when at college.  Detailed school surveys indicate that students at small schools are more engaged and closely monitored, despite fewer course offerings and activities.  Teachers report greater feedback, increased safety, and improved collaboration.  The results show that school size is an important factor in education production and highlight the potential for within-district reform strategies to substantially improve student achievement.

More Evidence on Charter Schools

Writing at Slate, Ray Fisman reviews the latest research on the efficacy of charter schools.  The study focuses on students at six Boston schools that had previously demonstrated an ability to improve students' test scores on the Massachusetts Comprehensive Assessment System.  This time, however, the researchers wanted to evaluate whether the schools really improved student outcomes or just mastered the art of "teaching to the test." Here's the breakdown:

The study examines the college readiness of Boston public school students who applied to attend the six charter schools between 2002 and 2008, with projected graduation dates of 2006–2013. In just about every dimension that affects post-secondary education, students who got high lottery numbers (and hence were much more likely to enroll in a charter school) outperformed those assigned lower lottery numbers. Getting into a charter school doubled the likelihood of enrolling in Advanced Placement classes (the effects are much bigger for math and science than for English) and also doubled the chances that a student will score high enough on standardized tests to be eligible for state-financed college scholarships. While charter school students aren’t more likely to take the SAT, the ones who do perform better, mainly due to higher math scores.