two decades later, diedre merkel rohrer -- teach for america as one of the biggest employers of stanforddents. of course, teach for america has not solve the problem of how in the week recruit the toughest, most committed and compassionate under gratz to -- to stay in for the long ball. but it has started a movement that has made teaching school. it has helped to gauge a -- to engage 20 somethings in the life of school. let me remind you that a quarter of a century after the 1976 oldham report, students and superintendent often heard that would happen in gaza and did not matter, but there socioeconomic background. today, the truth is much more complicated and hopefully -- thankfully, much more hopeful. a top notch teacher can advance learning in a year-and-a-half in a year's time and students will lose ground with a week teacher who may only advance his students how figure during the course of that school year. three good teachers in a row vs. 3 about once can make or break it out educational career. teachers, for example, now use regular formative assessments to differentiate instructio