Related Clues:

• Put out a feeler, maybe
• Means to a diagnosis
• Reason for a cram session
• Acid follower
• Class act?
• Check over
• Classroom challenge
• True-false, for one
• Not an actual alert
• Pop quiz, e.g.
• Do lab work on
• Clinical study
• Reason to say "1, 2, 3..."
• Run up the flagpole, e.g.
• Hurdle of sorts