Texas Sen. Ted Cruz reliably wins applause with a call to “repeal every word of Common Core.” It’s a promise he will be hard-pressed to keep should he find himself in the White House next January. Aside from the bizarre impracticality of that comment as phrased (Which words shall we repeal first? “Phonics?” “Multiplication?” Or “Gettysburg Address?”), the endlessly debated, frequently pilloried standards – love ’em or hate ’em – are now a deeply entrenched feature of America’s K-12 education landscape.