The more than 40-year-old tuition agreement between Minnesota and Wisconsin has turned into a good financial deal for Minnesota students, while Wisconsin officials are working to reduce the program?s cost. Wisconsin paid $12.9 million to the state of Minnesota and its colleges and universities for the 10,301 Wisconsin students who went west for the 2009-2010 school year, according to a report released Wednesday. That was the largest tab since at least 1975. The rising expense prompted Wisconsin Gov. Scott Walker to ask the Legislature in March to change the reciprocity agreement to make Wisconsin students pay a greater share of their education in Minnesota. That would shrink the state?s obligation. The request is pending.