Dr. Clark Blair was scrolling through his Twitter feed Monday morning when he saw a Tweet from U.S. News & World Report.The message contained a link announcing their first-ever “Best K-8 Schools” rankings of public elementary and middle schools. A few clicks later and Blair, the principal of McFadden School of Excellence, saw they were the No. 1 ranked elementary school in the state of Tennessee.McFadden was ranked No. 1 in math proficiency and tied for No. 1 in reading prof ...