As the retired owner of a health clinic I don't wonder.
I soon learned that a high school diploma was absolutely no guarantee that the applicant could read or do basic arithmetic. Interviewing them was a waste of my time.
A job applicant did not get an interview unless they had some community college courses listed on their resume. And...This is a job that could easily have been done by someone who had completed 6th to 8th grade in my mother and father's day.
bttt