2005 Ford 500 Computer relearn

How can you tell if the computer has completed the relearn procedure after the battery was disconnected? The vehicle failed an emissions inspection, and the mechanic told us to drive it between 20 and 150 miles so the computer could relearn the settings. He said we have just have to keep having it reinspected to tell if the computer reset, but they charge you the full inspection fee every time! Is there anyway to tell is the reset is complete?
Thank you