Over 400 people attended a weekend fund-raiser for Dorchester’s Neighborhood House Charter School hosted by Alan and Sherry Leventhal. Under two tents set up outside the Leventhals’ Chestnut Hill home, guests, including NHCS board chair Frederic Wittmann, Leslie Puth and Connie Walkingshaw, Mary and John Fowler, Dick and Nancy Friedman, Linda Cabot, Mike Ross, NHCS headmaster Kevin Andrews, and Tom Werner’s daughter Amanda, checked out artwork by students at the K-8 school.