(Urbana, IL) -- Freshman are starting classes at the University of Illinois and their wallets are taking a hit. A survey done by the "News-Gazette" finds the school ranks second about public universities in the Big Ten for costs. Northwestern tops the overall list. The private school costs 47-thousand-dollars annually. Penn State is the most expensive public university at 17-thousand-dollars a year followed by Illinois at 15-thousand a year. Illinois ranked third in costs last year among 34 public universities in a survey by the Association of American Universities.