CBS News | Our continuing series, What’s Working, looks at the innovations that are paying off in America, from education to infrastructure and more. Research finds that when students change schools they’re more likely to be less engaged, which could lower their grades and increase the risk they will drop out of high school. Students generally lose about three months of reading and math with each transfer. A promising new program for low-income students and their families at an Atlanta school has cut the student turnover rate by nearly half.