NME reports Westerberg said he originally began teaching his class the lyrics to "Smells Like Teen Spirit" as a joke. "I thought it would be funny to have the kids try and learn it. They laughed their way through it. The next day, they demanded to try it again," he explained. "After a while we went through most of the song day by day as a motivational tool. At first it was all just a joke, but after awhile, the students began to really build confidence through learning the song." Check it out here.