It is highly recommended that families consider purchasing an iPad case and an external bluetooth keyboard. 
An iPad case will add an extra level of protection for the glass screen.
Although the iPad includes a virtual, on-screen keyboard, an overwhelming majority of our students feel more comfortable using an external keyboard for word processing. There are also many keyboard products which will also act as a protective case for the iPad. Lastly, many students have shared that they have benefited by the use of a stylus, particularly in a math or science class. A stylus is a much less expensive item, and can also be purchased through many major retailers.
The choice of cover, case, keyboard, and/or stylus is left to the student and/or family. Accessories for your iPad can be purchased directly from Apple, or from other online distributors such as Amazon, Brenthaven, STM, Belkin, Zagg, or Logitech. Other vendors include Otterbox Cases, Lifeproof Case, Trident Case, Supcase. Just be sure to buy the accessory/accessories that fits your iPad model.