How do I restore faculty default settings on an iPad gen 5

This link should give you the information to restore the iPad to default settings:

 What to do before you sell, give away, or trade in your iPhone, iPad, or iPod touch - Apple Support

Faculty?

Perhaps you suggest that your iPad is managed by an educational establishment - and may therefore be centrally managed by an MDM platform. If so, you’ll likely need to contact the System Administrator responsible for managing your device.