BBy STEVE HOWIE MOUNT VERNON — The school district is studying the possibility of converting one or more of its six elementary schools into dual language programs where the day is divided between lessons in Spanish and English for all students. "Research says that's the best delivery model," Superintendent Mack Armstrong said. "Then the question is, Why wouldn't we do it?" Armstrong's enthusiasm for the idea follows a visit to the district two weeks ago by Richard Gomez, bilingual education director for the state education department in Olympia. In the last three years, Gomez has spearheaded efforts to create 17...