There was a day when schools supplies consisted of backpacks, calculators, and plenty of lined paper. But at Webb School, a private school in Knoxville, Tenn., 4th-12th graders are also expected to carry an Apple iPad with them to class. Jim Manikas, technology director at the school, says that students will be able to access information for their classes whenever and wherever they need to. The iPad will virtually eliminate the need to rely on stationary desktop computers and students won’t need to schedule computer lab time just to work on assignments. Over time, Manikas believes the iPad…