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The Music School Headmistress is a minor character who appeared at the beginning and end of the episode Professor Squidward. She attends a recital, mistaking Squidward Tentacles for Squilliam Fancyson.
She then invites Squidward to teach a class at her school. Not much else is known about her but she owns and runs a music college called Prestigious Music College in Bikini Bottom.
The Headmistress wears a pinkish dress, a pearl necklace around her neck, and wears glasses. She has curly yellow hair.