When grades are released a URL is passed to the LMS where students/teachers can access the grading information for the assignment in the grading area of the LMS. Codio passes grades back to the LMS as a percentage earned out of the available points designated in Codio.

By default, only the course teachers and the individual student can access the grading preview URL but by enabling the LMS shared feedback option for the course, this will pass a different URL back to your LMS system where anyone who knows the URL can access the students grading information

To enable this go to your course Admin tab, select Edit Details and then toggle the switch to enable.

LMS Shared Feedback