If you are looking at setting up, managing, and deploying multiple iPads in your school, the the iOS 5 Deployment Guide walks you through configuration profiles, Volume Purchase Pricing, and deployment options. Thanks to iPad Academy for posting the link to the PDF.
This app could be a great review for a basic physics class. It includes a study guide and covers most common units such as motion, vectors, energy, and optics.
Apple has released this development guide for those looking to create their own apps. This could be useful for teachers interested in having their students create their own apps.