“Not impossible, but let’s just say that a high school diploma 30 years ago was a lot different from a high school diploma today.”
Shouldn’t be a problem; there are plenty of workers with 30 year-old high school diplomas looking for work. In fact, that demographic has probably been hit worse than most, since they held a lot of decent jobs that were either shipped out or dumbed-down so an 18 year-old could do it.
Although I just got a new job, I fall into that group, I graduated HS in 1985.