Academic success depends a lot on the school, and like it or not, the American public education does not serve all students the same. Wealthy districts are nearly always more successful than poor districts. For the latest in our ongoing conversation about how children can succeed in school, we talk to author Paul Tough, who has built his career on studying what works in public education. Tough’s book “How Children Succeed: Grit, Curiosity, and the Hidden Power of Character” was a bestseller in 2013. In his follow up, “Helping Children Succeed: What Works and Why,” Tough explores what can be done to help kids succeed in both rich and poor schools alike.