Step 1: Click on the "Messages" tab.

Step 2: Select the message thread you would like to view as your co-teacher.

Step 3: Click the '...' in the top right corner of the thread and select "View chat as" to see all other teachers who communicate with the student.

Step 4: Select the teacher whose correspondences you would like to see.

Once you are finished, click on 'Switch View' to go back to your own view.