In a new wave of plans to recruit and retain teachers who say they cannot afford to buy or rent homes in pricey school districts, officials are considering measures that would put affordable housing within their reach. Those who have had teacher-housing programs in place for a while say they have seen success, although the programs have not completely resolved housing-affordability issues for teachers. In Nevada's 292,000-student Clark County district, which includes Las Vegas, officials are working on a proposal for attainable housing based on a University of California, Irvine, model. Under the proposal, which would have to be approved by the school board, the district would use parcels of its own land to build houses that would then be offered to teachers at affordable rates.