Yes it is. Click the following link (below) and scroll down the list until you see the word "post-".
http://www.umt.edu/urelations/style/p.htm
In this case, post is a prefix, not a standalone word. Therefore, it should be properly hyphenated as post-secondary.
Ordinarily it is spelled as the hyphenated form "post-secondary."
No it's not hyphenated.
College is considered post-secondary education.
Post secondary education is the educational level following the completion of a school providing a secondary education. This would include high school (secondary school). Thus, any degree in higher education following secondary school is considered post secondary, if not then it is not post secondary.
I have attended two post-secondary schools.
when you learn about post
post-war pick-me-up
The short answer is yes. It varies from organization to organization, but most of the medical sites I visited hyphenate post-traumatic.
Yes, college is considered a form of post-secondary education.
Yes it is. If a school is a college or university, it is a post secondary institution.
yes, and Associates Degree (AA) is part of a post secondary education.