No signing in or out in my district, except for PD days at other locations. If we leave for lunch or during our specials time, we tell the secretary so she knows we're gone.
At my friend's school in another district, teachers sign in, and at exactly 8:00 (their contract time), the secretary draws a red line below the last name on the list. If you're late, you must sign below the "line of shame." :lol: