Students can review and download their past submissions on a lab at any time as long at the instructor has not hidden the lab.
View current submission
Labs autosave anytime an edit is made. Anytime a student leaves and comes back to a page the lab will pick up where they left off.
View past submissions
Students can scroll to the bottom of a lab to see a history of their past submissions.
Clicking "View" next to a specific submission will expand the test cases.
Clicking "Open submission's code" will load what the student's code looked like at the exact time in submission history.
Download submission data
Students can download their submissions by expanding the file manager.
Then clicking the downward arrow icon for "Download project".