- Experimental results (lottery based):
- Estimates of the treatment-on-treated effect from the models that include covariates indicate that the reading test scores of students in these magnet schools are nearly 0.28 standard deviations higher
- Math test scores of students in magnet schools are nearly 0.14 standard deviations higher than what they would be if those students had attended other schools
- Nonexperimental results:
- The eighth grade results indicate that magnet middle schools have had similar effects on the mathematics achievement of suburban and central city students; effects are positive but statistically insignificant for suburban students and only marginally significant for city students
- The positive effects of magnet middle schools on reading scores are larger for students from the suburbs, but they are statistically significant for students from the central cities as well
- Estimates imply that 3 years of exposure to a magnet school in the middle school years increases reading achievement between 0.093 and 0.152 standard deviation for city students and between 0.219 and 0.265 standard deviations for suburban students.
- High school results indicate that, on average, interdistrict magnet schools have had positive and statistically significant effects on the 10th-grade mathematics and reading achievement of central= city students.