A question pool is a set of questions of any types that belongs to the author and others with whom the author shares it. See What is a Question Pool?
A question pool is available to the author in any worksite in which that person has permission to create assessments, and will show in the list of Question Pools.
You can import a question pool from a saved assessment, or from a file provided by a publisher or exported from another system.
Note: There is currently no way to export question pools, but the questions can be exported in the form of an assessment.
Select the Tests & Quizzes tool from the Tool Menu in your site.
Click the Choose File button to browse for and select the import file on your computer. Once you have selected your file, the file name will be displayed.
Note: Your import file must be an IMS QTI-compliant XML file. The Import Pool option does not accept zip files.
Once you have located the file, click Import.
You will see the question pool, under the name it was given in the import file, in your list of question pools.