You cannot modify the access settings of a published assessment, but there is a possible workaround.
You can modify the settings, parts, and questions of any assessment listed under "Core Assessments". When you publish an assessment, a copy is created and listed under "Published Assessments". For the published copy, you can make changes only to the "Delivery Dates" and "Gradebook Options" settings.
Note: After you've published an assessment, if you modify its "Core Assessments" copy, you'll have to alter the assessment's name before publishing it. When you publish it, you'll be creating another copy under "Published Assessments", not replacing the existing published copy.
The possible workaround involves retracting the published assessment, modifying the access settings to the "Core Assessments" copy, and then publishing that version with a different name. Follow these steps:
Settings
beneath the title of the assessment.
Allow only specified IP
Addresses
, and enter the IP addresses of those
computers.
Secondary
ID and Password
, and then fill in the "Username" and "Password"
fields.
Publish
.
Publish
again to confirm, or
Cancel
to abort.