All content on Wikieducator is legally licensed as OER in the sense that the license permits reuse and remix by others. Every edit in WikiEducator the use agrees to licensing content under the standard CC-By-SA license or CC-BY where specfied. So technically all content in Wikieducator is "OER" from a legal perspective.
However, an author may want to say -- "Please don't edit this material because I'm using it in a class" -- but this does not restrict anyone from making a copy (forking) and remixing for their own purposes.
I'm not sure that we can say that OER is only OER once it has passed various QA processes -- it would be better to thing about:
- Unreviewed OER and
- Peer reviewed OER.
Thinking about categories -- I'm not sure that the category OER is a useful category for education materials in WikiEducator -- because all content in wiki educator is legally licensed as OER. Perhaps the type of resource would be better, for example learning activity, online course, handout, open text book etc.
There may be very specific OER pages like the OER Foundation stuff or content covering the topic of OER -- so I think a narrower category focus would be more useful.
I think you are right, Wayne, that we shouldn't use the term OER to mean learning resources. But it seems too fine-grained to be listing specific types of resources in the highest category. I think the list could be quite long. Maybe in the educational content grouping, we want a category labeled "types of learning resources", along with categories for subjects, levels, and any other criteria that could be used to create broad groups of learning resources.