Related Clues:

• 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
• True-blue
• Entrance requirement, sometimes
• Word with pattern or data
• Kick the tires
• Word with tube or paper
• Ordeal
• Final, maybe
• Examination