To set up your school email on your iPad, go to Settings - Mail, Contacts and Calendars, Add Account, Select Google, enter your school email and password, and sign in, follow the prompts and MAKE SURE you select SAVE at the end. This sets the mail up on the Apple Mail app (looks like an envelope).

Once you set up your school email in this way, you can email out of many apps, like Pages, Notes, Evernote....