I agree with most of your list, but will add to it just a bit.
- How to thread your sewing machine
- How to wind a bobbin
- How to insert a bobbin in the bobbin case
- how to sew a straight seam of any width
- how to adjust the tension
- how to clean your machine, with emphasis on the bobbin area.
As you can see, I expect a beginner class to meet the needs of a true beginner, who may not even own a sewing machine yet, and a somewhat more experienced sewer who knows (or thinks he/she knows) the very basic elements of sewing.
I am largely self taught, and had no clue that I had to clean the bobbin and thread area on a regular basis until my machine 'froze' up on me. Being a bit mechanically inclined, i took the needle plate off, removed the bobbin and bobbin case and found a piece of what looked like felt in the needle area. It was lint packed so tightly that the needle could no longer pass through it! After a thorough cleaning, the sewing machine ran perfectly again.