In a response to a well written and thoughtful post that I recently read by @jmcconville1000, "Why the iPad is bad for education", I felt compelled to respond from my personal experience of rolling out a cart of 30 iPads in a shared high school environment.
Fundamentally I believe that an iPad can neither be good or bad. All it can ever be is an iPad. I argue instead, that when used effectively and with specific goals in mind, iPads can have a positive impact on education. Seeing that schools are investing money on these devices, the perspective to adopt is not a combative one, but rather one that explores how to effectively integrate the devices. Whether a school is 1:1, or there is a shared iPad cart, the devices can be used effectively.