This study examined whether having a teacher with National Board for Professional Teaching Standards (NBPTS) certification improves student achievement. The study analyzed data on about 3,800 second through fifth grade students taught by 198 teachers in the Los Angeles Unified School District. Study data were from 2003-04 and 2004-05. The authors…

The California class size reduction program provided schools with cash rewards for K-3 classes of 20 or fewer students. I show how program rules made it possible for schools to save money by using mixed-grade classes to meet class size reduction obligations while maintaining larger average class sizes. I also show that this smoothing of students…

While researchers continue to debate teacher qualifications, explore how to get more qualified teachers into urban schools serving low-income students, or try to determine whether teachers who are successful with middle-class students would also be successful with pupils in low-income urban schools, one practicable idea can easily be overlooked.…