In the school of boxing that I come from, that's frowned upon, giving up free shots, cos we know what those kinda shots do to a man's career, regardless of whether it shows up now, or shows up when you least need it. It takes a toll.
Our schools are, in a sense, factories, in which the raw products (children) are to be shaped and fashioned into products to meet the various demands of life. The specifications for manufacturing come from the demands of twentieth-century civilization, and it is the business of the school to build its pupils according to the specifications laid down.