I have an old iPad mini that belonged to my son in high school, how do I reset the iPad?
I have an 2012 iPad mini, it was my sons in high school. It has been locked for years. How do I reset it? It's gathering dust for years.
This support article has instructions for what to do to removing all previous information and making it ready for a new user.
What to do before you sell, give away, or trade in your iPhone or iPad - Apple Support