How can I join a university class conducted online as a non-matriculating student during COVID-19? I'd like to join a class at a university, as a non-matriculated student, that I can participate in online, due to COVID-19.  I already have a PhD (in a technical field), and am looking to take a class outside of a technical field, with the goal purely being personal intellectual enrichment.  Many universities are moving classes online due to COVID-19, which makes this practical.
I'm not sure how to go about doing this.  It's easy for me to find classes in the field of interest (Middle Eastern history) in various university catalogs, and it's easy for me to see if the university is holding it online or in person.  But I haven't been able to find out which universities will allow me to participate without being a degree seeking student.  I'm not tied down to any one university or any one particular class, but rather any class in my general area of interest that I can fully participate in.  I know that the application deadline for the upcoming semester is very soon (for cases where it hasn't passed).  Can you give me guidance on:

What types of schools will allow such participation?
What is the application process like?
How do I find these?
How do I go about doing this?

Note that I know there are a lot of open classes, MOOCs, Coursera, etc., but that's not what I'm looking for.  I'm looking for the full structure and engagement of a full university class, with papers that will be graded, and the like.

To clarify:

non-matriculated means here &quot;not seeking a degree&quot;, only (full) participation in a class
I am happy to pay tuition for this class
I'm located in the US
What types of schools will allow non-matriculated participation?

I'll skip this part, because honestly it was news to me that there are universities that don't do this.  Usually the emphasis is on job-related courses.

What is the application process like?

Very simple, if you can pay.  They want your money.

How do I find these?

Look for a &quot;school of continuing education,&quot; &quot;university extension&quot; or similar.  If you do not want something job-related, you might look at programs marketed to retirees.  In some places, such as those with a shortage of classrooms during teaching periods, this may be easier if you look for summer courses.  Availability of classrooms is not, of course, relevant for online courses.