How Effective Is Your School District? A New Measure Shows Where Students Learn the Most

".....The data, based on some 300 million elementary-school test scores across more than 11,000 school districts, tweaks conventional wisdom in many ways. Some urban and Southern districts are doing better than data typically suggests. Some wealthy ones don’t look that effective. Many poor school systems do.....

 

But in this analysis, which measures how scores grow as student cohorts move through school, the Stanford researcher Sean Reardon argues that it’s possible to separate some of the advantages of socioeconomics from what’s actually happening in schools."-