Los Angeles Unified, the second-largest school district in the country, is on pace to spend more than half of its annual budget on retirement and health-care costs by the year 2031. By then, it is projected to spend 22.4 percent of its budget on pensions and 28.4 on health-care benefits for current and former workers. The cost of health care is…

Public school districts are facing twin challenges: maintaining a labor supply of qualified teachers while shoring up the deteriorating system that compensates them. Keeping public-school teachers' pensions plans flush is expensive, and it accounts for a growing share of education spending. In some states, public charter schools provide an…