If Texas is like a whole other country, as the state’s tourism slogan goes, then Oklahoma is its chief teacher exporter. The latest Tulsa teacher to pack up her classroom and head 270 miles south is LeAnna Snyder, former fifth-grade teacher at Carnegie Elementary School. “Leaving Carnegie is one of the hardest decisions I’ve ever made. My stomach was in knots for months,” Snyder said, as her eyes welled with tears. “I feel like I’m letting the children down — and my district — but I’ve stayed here as long as I can.” Snyder’s departure for a Dallas suburb wasn’t just personally devastating. It even caught the notice of Tulsa’s top public school educator, Superintendent Deborah Gist.