Students of Gardnerville Elementary School returned from the dog days of summer on Monday to find a fundamentally different school.Where once had stood their gymnasium and office now stretched a paved entrance to a bright, brand new building - approximately 17,800 square feet of classrooms, a multipurpose room and front office.Behind the building lay a new playground. Blacktop so new it had luster in the morning sun. Freshly painted hopscotch courses beaming like rainbows."As of late Tuesday, we had 15,000 square feet of new sod down in the back," said GES Principal Shannon Brown. "There's a lot of excitement about …