An absolute must for any classroom is the ability to create text documents. If you search for a word processing app in the App Store, you will come up with lots of possibilities. I prefer Pages, as it works smoothly and has a lot of great features. Unfortunately, most of those word processing apps are paid - and the better ones can be a little pricey, especially if you are buying for a class set of iPads. But word processing is a necessity, so what are you going to do?
An intern in my building, overhearing my conversation on this topic with our technology specialist, suggested an alternative that had not occurred to me - my students, already having Gmail accounts, can create documents, spreadsheets, presentations, and more from their iPads with Google Drive - for free! They can also share and upload documents easily, which is perfect for the group projects we are often working on. In addition, the built in spell check and dictionary capabilities of the iPad are still functional within Google Drive, so it a perfect solution for the every day needs of my students. Sure, there are times they will need to create more complex documents, but we do have access to a computer lab once a week. I was looking for something they could use to create simple documents on a daily basis, and this fits that need perfectly as well as fitting my budget.
If you would like to learn more about Google Drive, you can find more information here.