Bloom's taxonomy is a 60 year old categorization of levels of understanding in learning environments. It breaks down understanding into six classes. These were originally:
- Synthesis and
The classes have since been challenged and modified a little but remain essentially the same. Each of these classes represent a progressively deeper understanding of and ability to use the knowledge gained in the relevant subject area.
Here are a few references where you can read more about Bloom's taxonomy and its place in the education industry.