Particularly for iPad classrooms, using AirDrop is a great way for students to turn in work at the end of the lesson.
You can even send books from an iPad to a MacBook and vice versa, so you may use this method to transfer books between Book Creator for iPad and Book Creator online.
If you're new to AirDrop, read up on how it works from the Apple Support website.
1. Make sure AirDrop is turned on
Swipe down from the top right of the screen to open the Control Center, then tap on the AirDrop icon.
2. Choose your book and export it
Go to the 'My Books' screen and tap the export icon. Choose a format (it should be ePub if you want to send it to Book Creator).
If the other iPad has AirDrop turned on, you can tap on their name to start sending the book.
3. Accept the incoming book
From the receiving iPad, choose which app you want to open the book in. Choose Book Creator if you want to have the editable version of the book (you could choose Books too if you want to open the book and read it in Apple Books).