Country and western music, the leadership of the Confederate General Stonewall Jackson and the work of America’s most powerful gun lobby will all have to be taught in Texas schools if conservatives prevail at a highly charged meeting of the state’s board of education. A total of 48 of the 50 states have signed up to a plan being promoted by the White House for new, higher national educational standards but Texas and Alaska have opted out, in order to keep control of what is taught in their state-funded schools.The late Charlton Heston, a vociferous president of the National Rifle...