Education is no longer designed to teach.
I recently made the mistake of helping my daughter with her "A" level biology homework - which given I used to work in the medical profession I thought should be a doddle.
She had to describe in 'detail' the movement of blood through the circulatory system, so I started with the blood leaving the left ventricle through the semilunar valve into the aorta, and how it travels through arteries to the capillary beds and then back through the veins, through the inferior and superior vena cava, to the right atrium. (simplified)
She was sitting looking puzzled, so I asked what was wrong. She said "Oh, we don't need to know all that"
I was gobsmacked. How can you possibly learn human biology if you don't even need to know the names of the bits you are supposed to be talking about?
I've noticed this before though, that students seem to be actively discouraged from taking a wider interest in any aspect of a subject outside the strict focus of the coursework.