Sending iPad back to factory setting
Sending iPad back to factory setting and other ipads
iPad 2, iOS 9
Question marked as
If your intent is to wipe/reset the device for reuse by another user or with a different AppleID - or you are sending your device away for repair - you would be best advised to prepare it properly:
What to do before you sell, give away or trade in your iPhone, iPad or iPod touch – Apple Support