If Outcomes doesn’t work, you could do an export/import of the gradebook, but there are caveats. (Any automated solution would involve programming using the APIs.)
-Export the gradebook once everyone has completed the training.
-I would say to just import the gradebook file from the manual course into each section. And while you can tell Canvas to ignore all the students that are not in the section you are importing to, unfortunately you have to do this one by one for each student each time you upload the file. That would be a lot of clicks. See image.
-So instead, you would need to export the gradebook from each section, then copy/paste the lab safety column from the manual class’s gradebook csv into each section’s exported gradebook csv. Then import/upload into each course.
It would probably be easiest if you have access to do this in each Canvas section, especially to avoid any FERPA concerns about grades.
Let us know if you get any better ideas from support!