Principal Scott Steckler, rear, observes fourth-grade teacher Lora Johnson on Oct. 23 as she works with her students at George Cox Elementary in Gretna, La. With a grading sheet in hand, Steckler is complying with the latest of Louisiana’s education reform efforts to play out in public schools. Half of the high-stakes evaluation is based on classroom observation. (AP Photo/The Times-Picayune,Ted Jackson)