An even dozen eggs is a good amount to bring to a potluck to share. If you have any doubts, make more. I've seen people send down tons of Deviled Eggs and still make it through a full meal afterward.
Step 1: Boil eggs
(Place the eggs in a large pot; cover with water, and bring to a boil. Boil vigorously for 5 minutes then turn off the heat. Pour eggs into a strainer and run cold water on them, or wait, until you can handle them.)
Peel the eggs and rinse off any shell bits. Halve each egg and place the halves on a large plate. Scoop the yolks out into a bowl.