Americans’ outlook on the value of college is split between a belief in the power of a degree and serious doubts about affordability. Degree-seekers, graduates and employers think costs put a crucial credential out of reach for many potential students, according to a new survey by Gallup and the Lumina Foundation. “Americans haven’t lost faith in the value of college, but they’re increasingly unsure they can afford to take part,” said Courtney Brown, vice president of impact and planning at the Lumina Foundation. “That gap between belief and access should be a wake-up call.”