Share the information with the Team
It may seem obvious; however, I know from experience that only snippets of information are shared with the Team that was evaluated. A clear example that I have been a part of, is when a Manager informs the Team that they failed the Mystery Visit. The Manager then goes on to tell the Team, let’s do better next time. This was a store that had failed they’re Mystery Visits for the past 6 months (as far as I knew then).
Some managers may share more with the Team, of course. However, I would suggest actually explaining the purpose of the Mystery Visits and why it can help. When people don’t know the “why” they will not care.
It may be difficult, however, sharing both good and poor points with the Team will help them understand the end goal of the program. Walk through the weaker areas with the Team and what they can do to improve. Some employees may, through their own initiative, find ways to improve.