Possible Clues:

• Night sch. awards
• H.S. proficiency tests
• H.S. proficiency exams
• Some home-schoolers get them, briefly
• Sheepskin alternatives, for short
• Certifications on some college apps
• H.S. dropouts may earn them
• Diplomas of a sort, for short
• H.S. dropouts' achievements
• Certifications on some coll. applications