Related Clues:

• Average grade
• Canadian capital?
• Not-so-hot grade
• Scrabble tile
• Rounded letter
• Letter switched to ess in this puzzle's theme
• Passing grade, but nothing to write home about
• Capital of Colombia?
• Fair grade
• Grade in the 70's
• Mediocre mark
• Mid-grade?
• Civic leader?
• Can opener?
• Musical note