I was replacing one of the outlets in the kitchen in my home and I noticed the ground wire goes to a screw on the back plate of the outlet box, and a green ground wire runs from the same screw on the back of outlet box, to the receptacle. I opened a few more outlets in the house and noticed that they are all wired that way.
I'm no expert, so I was curious if these outlets are considered grounded properly or not. Or if I should go into every outlet in the house and run the ground wire directly to the receptacle and ditch the green wire to the outlet box.
Thank you