This article discusses the transforming effects of tablet PCs in the classroom. As 1-to-1 computing becomes the goal on K-12 campuses, school districts are turning to this newer, pen-based technology. Saint Mary's School's new Lenovo ThinkPad X41 tablet PCs had transformed the way Saint Mary's teachers did their jobs. Teachers created outlines for each class, projected those outlines onto a screen, and used tablet technology to scribble down notes on the file while lecturing. After class, the teachers saved the notes to a Web server for anyone to access. Saint Mary's is not the only K-12 school district to build its 1-to-1 computing program around tablet technology; over the last few years, a number of other districts have also chosen tablets as the basis of a 1-to-1 initiative. In many cases, this new take on mobile computing serves as a supplement to the old and trusty laptops. In others, particularly those like Saint Mary's, technologists are relying upon tablet technology to replace laptops altogether, sending the flip-up screen the way of the Dodo bird and the joystick. Findings of a study that examines the use of 1-to-1 computing in education is also presented.