While Underwood did get her bachelor's degree from Northeastern State University in 2006, she was actually three credits shy of completing her studies. However, due to her accomplishments in music, and her many television appearances, the school awarded Underwood with the three needed credits, which allowed her to graduate that year.
During an interview with People magazine after her graduation, Underwood hinted that it was her lack of a television internship that nearly held her from getting her degree (via Taste of Country). As she shared with Taste of Country, she did plenty of work in the entertainment industry that could have likely counted toward her college credits. "I've obviously done enough with television. There was my internship right there!" she joked.
Just before graduating, Underwood had launched her first major tour. But, because she didn't want to take away from the experience of other graduates, she didn't do any interviews on the day of their graduation.