Related Clues:

• See 80-Across
• Academic challenge
• Class act
• A grammatical case
• Paper holder
• Put through the paces
• Take it to make the grade
• Measure of skill
• Final, e.g.
• You need it to make the grade
• Determinant
• Kind of tube or case
• Entrance requirement, sometimes
• Word with pattern or data
• Kick the tires