Elementary school students head back to class after lunch and recess at the Coventry Village School in September 2019. File photo by Glenn Russell/VTDigger SHELBURNE — Vermont leads the U.S. in providing local food in schools. In fact, 89% of Vermont schools purchase some local food, according to Vermont FEED, a collaborative farm to school project. U.S. Sen. Peter Welch, D-Vt., introduced the Farm to School Act in the Senate last year, which wo…