What is the standard for Learning Income?

The 'learning' that will serve as the basis for Learning Income is: through what experience did that person come to acquire knowledge that expanded beyond the knowledge and beliefs they originally held? A practical standard for measuring this is how much the expected correct-answer rate has increased on questions that the person, at the level of knowledge they were presumed to have, would likely not have been able to answer. Currently, measuring this accurately is nearly impossible.

The technique I am preparing for this is a methodology that extends Knowledge Tracing so that it can handle diverse contexts and types of interaction beyond standardized problem-solving records.

Meanwhile, to judge whether one has 'gained useful knowledge,' which is what this Learning Income would measure, we need to define useful knowledge, and that definition should emerge from social consensus. For now, I think the discussions on revising the national curriculum come closest to this process.