Shop class has been discontinued for "insurance" reasons.
And, i do use all my trigonometry when making cabinets without 90° corners.
But, even though i know exactly what calculus is good for, i just use the pre-worked out formulas for beam load computations.
How many school kids, do you know, that have been taught to kill, clean and cook a chicken?
to answer your last question my guess would be zero. Fortunately for me I had grandparents that had a farm and when mom and dad went on vacation they were my long-term babysitters and I was forced to learn all of these things. I was young enough that once I got over the initial shock I learned very quickly. The killing part of it was tough for me and likely still would be today, but even back in those days the methods of execution were about as humane as you can imagine.