Speeding past the Steve Jobs Post-PC Era into the Age of Mobilism, the authors foresee how, by 2015, each and every student in America's K-12 classrooms will be using their own mobile computing device, with those devices engendering the most disruptive transformation in education in 150 years. Classrooms will move from today's "I Teach" teacher-centric and, by and large, ineffective and boring pedagogy to a "We Learn" pedagogy where the teacher learns along with the students, mastering content and practicing the key 21st century skills. (Contains 6 figures, 1 table and 30 notes.)