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The idea is that the welfare of individuals ( and thus the nation ) is best served by and directly related to , the ability of people to control their own lives and chart their own course toward goals they have chosen . " A 1997 Harvard University analysis of two private schools opened in Cleveland as a response to vouchers - Hope Academy and Hope Ohio City - found that student test scores in math and reading rose in their first year enrolled , and that the Cleveland voucher program had " helped improve student test scores . A more meaningful way to measure how schools prepare students for the future is to examine how test scores change from one year to the next for students who attend the same school for two years in a row . Rather , such analysis permits comparison of various options , all of which may be beneficial in some way but not all of which can be simultaneously undertaken . Some tables seemed stuck on the appetizer-entree-check paradigm . A national legislature and president were to address national concerns while state legislatures and governors would remain responsible for local concerns . For example , William Sanders of the University of Tennessee has found that teacher quality can add as many as 50 percentile points to student test scores . Edgewood 's test scores , although better than those of many Texas school districts , are well below statewide averages . Cost-benefit analysis is a comparison of the estimated costs of an action with the estimated benefits it is likely or intended to produce.27 Almost all business decisions involve some measures of costs vs. benefits .