Yes.
As you get to the Magic Kingdom parking toll gate, choose the second or third booth from the right. Tell the attendant you are dropping someone off (you may ask for directions).
Then thank the attendant (regardless of what he says) and drive on. Bear right at the big fork ahead. Take a left at the first interseciton with a light and an allowable left turn.
The next thing you come to will be the Ticket & Transportation Center (MK) drop off area.
If they are going immediately to MK proper it would save them some time if you went straight to the Contemporary Resort instead of left to the TTC to drop them off and they would walk to MK from there. Try to drop them off near the guard shack (10 minute walk), as opposed to well in at the front door or awning of the resort.