Telling kids they can go to college, even if they earn mediocre or poor grades, undercuts the work ethic they’ll need to succeed, writes Nick Ehrmann in The Atlantic. He describes bright underachievers who slide through high school with C’s and D’s, go to college and fail. Travis Hill at age 11 (left) and 17 (right). Photo: Nick Ehrmann “Bright and conscientious,” Travis Hill joined Ehrmann’s fourth-grade classroom in a Washington, D.C. school in 2000. “He participated consis