As it struggles to fill available job openings, Walmart has announced a new policy in which it will cover 100 percent of college tuition for its employees. However, the plan doesn't cover all colleges and universities. The country's largest private employer will foot the bill for part-time and full-time employees attending one of the company's 10 "academic partners," which include the University of Arizona and Southern New Hampshire University, according to Walmart officials. The new policy also covers the cost of books and other supplies, the retailer says. Employees who participate in the program will be twice as likely to receive a promotion than other workers, says Lorraine Stomski, Walmart's senior vice president of learning and leadership. Graduates will also be paid at a "significantly higher rate" than their coworkers, she adds.