How can I let one student move through a course without opening the modules to all students?
Hi S O'Mara - Unfortunately, that is not possible at this time. I encourage you to vote up--and comment on, you like--this Feature Idea: Unlocking Modules for individual students . The only other option currently, which is mentioned in the comments for that idea, is using Mastery Paths: 4152,668299 The latter is a cool feature, though it definitely requires a bit of planning ahead.
Hope this helps a bit.
Retrieving data ...