How automatic rostering works
Understand when students are added to a Fiveable class from an assignment link.
Quick answer
When an assignment is published to a saved class, its class-specific link asks a signed-in student to join that class. After the student joins, the Classes roster reflects the account and class reporting can include that student.
What to do
Assign work to a saved class
Open Settings on the assignment and choose the class. Publish the assignment to create the class-specific link.

Auto-roster adds students to the selected class when they open its assignment link and start working. Share that class link
Use the link for the intended class period. A general link does not carry the same class membership step.
The student signs in and joins
The student opens the link, signs in, and sees Join [class]. They select Join class before starting the assignment.
Check Classes
Open the class roster to see the connected student. A source such as Assignment link or Signed in helps explain how the row was added.
What students see
The join prompt appears once for that class. It tells the student which class the assignment belongs to before they select Start assignment. If their account has no last name, or only a name made from their email, Fiveable asks for a first and last name once before the assignment starts and shows that name to you.
If something is not working
A student's name is missing, partial, or looks like an email.
Open Classes, select the pencil button on the student's row, type the name you want, and save. Your edit stays on the roster. Students whose account has no last name are now asked for their first and last name the next time they start an assignment.
A student did not appear in the roster.
Confirm the assignment was assigned to that class and that the student opened the class-specific link, signed in, and selected Join class.
A student joined the wrong period.
Open Classes, select the arrows button on the student's row, and choose their class. Their work moves too for assignments both classes have. Students already in one of your periods are also warned before they start from another period's link.
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What students see when they open an assignment
Fix an assignment a student cannot open, start, or submit