Answer: duncecap

AnswerCrossword Clue
DUNCECAP

Hardly a mortarboard

DUNCECAP

Accessory for one who's been cornered?

DUNCECAP

Quaint headgear for a class clown

DUNCECAP
Old school headgear.
DUNCECAP
Corner sitter's headwear
DUNCECAPQuaint humiliator
DUNCECAPSymbol of bad behavior
DUNCECAPIdiot's hat of yore
DUNCECAPClass clown's punishment?