Riverside Elementary East is on a mission to be the fittest school in the land. The school recently learned it’s one of 77 schools from six states — Pennsylvania, Delaware, New York, New Jersey, Maryland and Connecticut — in the running to win a grant contest sponsored by Danimals Yogurt and Project Fit America. “Of those 77 schools, 17 are in Pennsylvania. We’re the only ones in Lackawanna County,” said Riverside East Principal Nicole VanLuvender. “There’s a large bulk of them in Philadelphia.