I wrote about food in the Concord schools (and Concord Carlisle High School) for the Boston Globe in a story published this morning. Led by Alden Cadwell, a top adviser to Jamie Oliver's Food Revolution when the show made its splash in Huntington, W.Va., the district has a goal of making all food from scratch within five years, and sourcing at least 30 percent of its ingredients from local farms within that same window.