In data envelopment analysis (DEA) literature, the returns to scale (RTS) of an inefficient decision making unit (DMU) is determined at its projected point on the efficient frontier. Under the occurrences of multiple projection points, however, this evaluation procedure is not precise and may...

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...