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And while tuition there may be relatively low compared with what it is at similar institutions , the fact is that tuition and fees have gone up 74 percent at UNC-CH over the last five years . This implies that teachers switching to another occupation requiring comparable skills could have enjoyed an average pay raise ranging from 9.9 to 19.0 percent . This is hard because , again , we have to be right 100 percent of the time ; they only have to be right once . The 1996 population estimates report 29 percent of our children living in poverty while over 60 percent of our mothers with children under 17 year of age are working outside the home .