Or the student sits in front of a computer and does the test and the result is shown on the screen.
And any wrong questions a print out is given giving the reference section where the question originates from. The student can then take it to the FI if further info is required.
As such a ground examiner is not involved and there is no requirement to submit the results as they are already in the FCL system just like how they deal with the ATPL results.
The PPL examinations in the main has been a mockery of the standards document since before I did my PPL 14 years ago. My exams were given and marked by the fat bird on reception who's sum knowledge about aircraft was that's a red one and that's a blue one.