Someone's about to get schooled, and if it's not the youth of America, then it'll be one of the companies rushing to release educational products this week. While Kno takes the interactive approach, and Apple typically keeps us guessing, Chegg hopes its new online reader will capture students' imaginations. The HTML5, cloud-based platform clearly thinks it's portability the kids want, working on almost any connected device. There are interactive features, such as an "Always on Q&A" where questions about material can be answered by the community and -