I have worked with  on some other seemingly unrelated articles and I will eagerly vouch for his Wikipedia editting skill, dedication, concern for producing fine articles and improving Wikipedia. He is also a delight to work with. My opinion is that we should allow institutions without Wikipedia articles in the list. The reasons are: 
I fear people not finding an institution on this list could be misinterpretted to mean that it might be accredited. Which could cause real harm.
The length of this list doesn't carry the same negatives IMHO as the examples of lists given by ElKevbo.
An institution without an article might flush out academic frauds POVing at Wikipedia at least as well as institutions with articles.
Orlady wants it that way and she's worked hard on this list and I respect and appreciate that.
Have fun,