Can Course List Be Rearranged?

Indeed! The post list is actually arranged by publish date just like your typical blog home, archives, or search results.

So to insert a post in between two other posts, it’s published date needs to be between those two posts. You can always edit that date on the edit posts screen.

As of now, there is no way to manually arrange the post listing order regardless of publish date but that is a great idea that I will consider building into an add-on.