special correspondent john tulenko reports on the cheating scandal that rocked atlanta's schools. >> the pressure to boost scores by any means necessary is so great that teachers think they have to get those scores up by hook or by crook. >> ifill: and the president issues a new executive order to circumvent congress and revamp the "no child left behind" law. >> where there's a high bar, the folks who are doing the right thick for children, we want to give them a lot more flexibility, frankly get out of the way and let them hit that higher bar. >> ifill: that's all ahead on tonight's newshour. major funding for the pbs newshour has been provided by: >> oil companies have changed my country. >> oil companies can make a difference. >> we have the chance to build the economy. >> create jobs, keep people healthy, and improve schools. >> ...and our communities. >> in angola chevron helps train engineers, teachers and farmers, launch child's programs. it's not just good business. >> i'm hopeful about my country's future. >> it's my country's future. >> and by bnsf railway. >> and by the bi