Students at the University of Delaware will have a heftier bill in the upcoming academic year. In-state students at UD will pay $12,342 in tuition and fees for the 2014-15 school year, an increase of $230, officials announced Monday.The 1.9 percent growth is the smallest percentage increase in more than 30 years.D is not alone in seeing such increases – nationwide, the average cost of a four-year public university, including tuition, fees, room and board soared from $9,196 in 2001 to $16,789 in 2011, according to the latest figures available from the National Center for Education Statistics.