I'll work on adding citations soon. I'm just trying to get my main points down first while I've got them on my mind.
I've started adding citations to this article.
An excellent start... but it reads too much like an essay one would write up for an education class, and not an encyclopedia article. For example, In several cases, you present information using words like "it is important that..." This may be true, but the reader needs to know who says it is important. The reader also needs to know if anyone disagrees. Blueboar (talk) 17:55, 19 January 2011 (UTC)
Rename and rewrite the article
Form my point of view the scope of the article is too narrrow and the text is not up-to-date. I would propose to rename the article into "educational feedback" (it is not always "corrective") and recommend to start with the works of John Hattie to make the article more concise.