This article is from April 2018, but was brought to my attention via Harold Jarche’s excellent end-of-year roundup.

Business schools have huge influence, yet they are also widely regarded to be intellectually fraudulent places, fostering a culture of short-termism and greed. (There is a whole genre of jokes about what MBA – Master of Business Administration – really stands for: “Mediocre But Arrogant”, “Management by Accident”, “More Bad Advice”, “Master Bullshit Artist” and so on.) Critics of business schools come in many shapes and sizes: employers complain that graduates lack practical skills, conservative voices scorn the arriviste MBA, Europeans moan about Americanisation, radicals wail about the concentration of power in the hands of the running dogs of capital. Since 2008, many commentators have also suggested that business schools were complicit in producing the crash.
When I finished my Ed.D. my Dad jokingly (but not-jokingly) said that I should next aim for an MBA. At the time, eight years ago, I didn't have the words to explain why I had no desire to do so. Now however, understanding a little bit more about economics, and a lot more about co-operatives, I can see that the default operating system of organisations is fundamentally flawed.
If we educate our graduates in the inevitability of tooth-and-claw capitalism, it is hardly surprising that we end up with justifications for massive salary payments to people who take huge risks with other people’s money. If we teach that there is nothing else below the bottom line, then ideas about sustainability, diversity, responsibility and so on become mere decoration. The message that management research and teaching often provides is that capitalism is inevitable, and that the financial and legal techniques for running capitalism are a form of science. This combination of ideology and technocracy is what has made the business school into such an effective, and dangerous, institution.
I'm pretty sure that forming a co-op isn't on the curriculum of 99% of business schools. As Martin Parker, the author of this long article points out, after teaching in 'B-schools' for 20 years, ethical practices are covered almost reluctantly.
The problem is that business ethics and corporate social responsibility are subjects used as window dressing in the marketing of the business school, and as a fig leaf to cover the conscience of B-school deans – as if talking about ethics and responsibility were the same as doing something about it. They almost never systematically address the simple idea that since current social and economic relations produce the problems that ethics and corporate social responsibility courses treat as subjects to be studied, it is those social and economic relations that need to be changed.
So my advice to someone who's thinking of doing an MBA? Don't bother. You're not going to be learning things that make the world a better place. Save your money and do something more worthwhile. If you want to study something useful, try researching different ways of structuring organistions — perhaps starting by using this page as a portal to a Wikipedia rabbithole?

Source: The Guardian (via Harold Jarche)