The Oregon Board of Higher Education approved tuition increases Friday averaging 7.2% for the 2011-2012 school year. OSU-Cascades has the smallest increase, of 5.5% overall, and continues to have the lowest overall tuition and fees, at $6,459 for a resident undergraduate taking 15 credit hours. Tuition at the University of Oregon is set to jump more than 7.5% next year, pushing tuition and fees for full-time resident students to more than $8900 a year. The new tuition figure represents an increase of 132% since 2000.