... the traditional dec ision-making framework of school districts. W hile anyschool district transportation analysis will include direct costs, an accounting of envi-ronmental emissions, children's ... choice policy 2181The policy implications of this work span several distinct decision-making areas;we focus on three. The first, and m ost general, is the need to evaluate polici es w ithin alarger ... different school district choice policies bycreating scenarios in terms of mode share, cost (public and private), and environmentalemissions. It also would allow school boards, district transportation...