I would eliminate the human element. Any instruction that doesn't require hands-on experience can probably be delivered by a computer, with immediate grading. T

I would eliminate the human element. Any instruction that doesn't require hands-on experience can probably be delivered by a computer, with immediate grading. The only bias in grading is that implemented by the programmers, and it's the same bias for all students using the instructional program rather than a different set of biases depending on the teacher (and their mood at any given moment).