How to Wipe an iPad
If you need to wipe an iPad, you can do so through the Settings application on the device or through iTunes on a computer.
In order to completely delete personal information and data from an iPad, the device must be wiped. iPads can be wiped directly from the Settings application or by connecting the device to iTunes on a computer.
Wiping an iPad from the Settings Application
In Settings, select General. Scroll to the bottom of the screen and select Reset. Select Erase All Content and Settings and then click Erase twice in the dialogue boxes to wipe the iPad. The iPad displays an Apple logo loading screen while wiping and returns to the initial iPad setup screen when the process is complete.
If Find My iPad is enabled, the iPad prompts you to enter your Apple ID password before wiping.
Wiping an iPad via iTunes on a Computer
Connect the iPad to the computer using the USB charging cord and open iTunes. Click Trust in the dialogue box that appears on the iPad. Click on the iPad icon near the top left of the iTunes window to access the Summary screen. Click Restore iPad and then Check in the automatic updates dialogue box. Finally, click Restore and Update to wipe the device and update it to the latest iOS version. Make sure to leave the iPad connected to the computer and iTunes open while the device restores. A restore confirmation dialogue box appears when the process is complete.
If you need to back up your iPad before wiping it, click the Back Up Now button on the device Summary page.
If the iPad is not backed up through iTunes or iCloud, wiping permanently deletes personal information and data.