When a teacher wants to add a rubric to an assignment, they currently have to search through all of their courses to find the right one. This may require them to scroll down a long list before they find the right course. While it is helpful that rubrics are available to use from other courses without importing them, it would be more efficient to have two options on a menu or tabs:
1) Rubrics from this course (Default view)
2) Rubrics from other courses
This would allow teachers to add rubrics from the most likely place and also allow them to search through their other courses if they wanted.
Added to Theme
Improved UI Controls and Usability - Additional filtering and view options Theme Status: Identified