Related Clues:

• Greek letters
• Fraternity letters
• Sorority letters
• They're all talk
• Rigorous tests
• Master's degree requirement
• Seniors' hurdles, maybe
• Grad student's grilling
• Certain exams
• Doctorate hurdle
• Face-to-face exams
• Some stars
• Tough tests
• Hurdles to a degree?
• Examinations of a type