It is difficult to segregate classroom learning from experiential learning, and thus expand the scope of classroom to everything that one would learn while studying at a B-school. Why the would-be managers are seeking management education? If indeed management could be learnt best at the workplace, then there was simply no use of them going to a B-school because they were learning so much at work itself. This can be equated to teaching rocket scientists nuclear fission and cabinet ministers political science.
On the other hand, people with no work experience would have the maximum need to learn about management. Everybody had a viewpoint on management, both, people who are studying it in the B-school, and the others who couldn't make it. But, to be able to talk about 'value-addition', one would have to know what it is. The oft repeated example of the Ambanis and Gates were exceptions, not the rule. In fact Gates himself has said that though he dropped out of high school, he doesn't recruit anyone who has.
