I'm sorry but your idealism is just leading to you talking nonsense. No teacher has the time or resources to try 1,000 different techniques just so they can exhaust every possible avenue for teaching every single student. In an ideal world you might be right, but its like with medicine, you don't spend thousands on a drug that will keep a cancer patient alive for an extra day, since lots of people will die of other stuff. You can't spend all your time on one pupil at the expense of the rest.
Well if these kids are no pursuing a career related to neurobiology, thats great. That's an example of specialising early, they didn't have to know about the Great Gatsby or quadratic equations to do that.
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