I believe that the only way to change the world, is to adopt a system which is not based on money anymore. That is why I have created a project, which I can hopefully carry out in school, where an exchange mechanism is in place.
To explain myself better:
We would set up a little shop, full of academic materials, eg: erasers, rulers, pencils, calculators etc... and then, we fix a price for each item. If someone wants to buy the item, they will give us other objects which will account for the cost of the object. Of course, we will trade and make a profit-profit deal, which would give money only the importance of being a standardising agent, giving everything a value relative to everything else, without being something material in itself, just like the first members of the human race bargained.