After you fill out the Post Hire survey for all candidates, you can easily access this reporting. Please note that only users with 'Admin' privileges will be able to view this information.
To start, click on the 'Insights' tab in the navigation bar.
Click on 'View Legacy Reports' in the upper right hand corner of the page.
Click on 'Post Hire Check-In'.
You will now see a list of candidates that you or your fellow hiring managers have rated as well as how they've been rated over time. You can drill this information down by job or employee name and also export this information to CSV for employee record keeping purposes.