School lunch : implementing nutrition changes was challenging and clarification of oversight requirements is needed / United States Government Accountability Office -- School lunch : modifications needed to some of the new nutrition standards. statement of Kay E. Brown, director, education, workfroce, and income security, Government Accountability Office. hearing on "school meal regulations : discussing the costs and consequences for schools and students" -- Testimony of Margo G. Wootan, director of nutrition policy, Center for Science and public interest. hearing on "school meal regulations : discussing the costs and consequences for schools and students."