What do the course status badges mean?

Each course in a sequence displays a status badge that tells you where you are with that course:

• Locked — Prerequisites have not been completed yet. It is recommended to finish earlier courses first, though you can still access this course independently.
• Available — Ready for you to start. All prerequisites have been met.
• In Progress — You have started this course but have not finished it yet.
• Completed — You have finished this course.
• Skipped — A teacher has allowed you to bypass this course. It counts as done for prerequisite purposes.