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Thus cost-benefit analysis is simply a tool for separating good intentions from good ideas . ” Some public universities are imitating the “ private-school model ” of setting tuition : a high list price and big scholarships . While it was not the first state to implement such a program , the Arizona model merits close scrutiny as a primer for success , particularly because it has withstood legal challenge and was deemed constitutional by the Arizona Supreme Court in 1999 . For now , Sweet Temptations is one of few businesses open in the small mixed-use complex near the city fountain . Are teachers motivated or frightened by accountability and performance-based incentives ? Proper cost-benefit analysis of environmental proposals is simply a tool for separating intentions from good ideas . Since federal Pell grants and many state grant programs distribute money based on a formula that increases grants when tuition is higher , the private-school model allows colleges to charge wealthier students more and use that money for extra aid to low-income students . A charter school administrator of an International Baccalaureate program , which offers advanced studies for high school students , proclaims the teaching positions at that school are " plum jobs that represent the ultimate in accountability - students pass the exams , or the teachers do n't have jobs ! This is despite the fact that having a child in a voucher program means a financial sacrifice to these families , who have to pay half or more of the tuition in most programs .