United States public schools in the first decade of the twenty-first century are faced with increasing demands for improving performance; simultaneously, government budgets are stagnant or shrinking. Thus it is particularly important to consider ways in which schools and school districts can use...

We analyze the technical efficiency of German and Swiss urban public transport companies by means of SFA. In transport networks we might face different network structures or complexities, not observed, but influencing the production process. The unobserved factors are typically modeled as...