Article Photos: Oklahoma superintendents attack accountability system as 'flawed, biased' 2/6

Tulsa Public Schools Superintendent Keith Ballard speaks Thursday, Oct. 4, 2012, during a news conference as school chiefs from across the state are meeting in Oklahoma City to express concern and frustration about the A-F school evaluation reform.  By Paul Hellstern, The Oklahoman <strong>PAUL HELLSTERN - Oklahoman</strong>