Mrs. Kerr is a perky blonde woman who became the Pre-Algebra teacher at Yancy Academy after Mrs. Dodds was turned to dust by Percy Jackson.

Percy Jackson and the Olympians

The Lightning Thief

Mrs. Kerr appeared during a school trip to a museum for Latin class, which was being taught that year by Mr. Brunner. She replaced Mrs. Dodds after Percy defeated her, who turned out to be the Furies, Alecto, in the museum when she attacked him for stealing the Helm of Darkness. Through the interference of the Mist, the veil that shuns away all the magical things happening the world, the mortal students believed that Mrs. Kerr had been with them since the first day of the school year, yet Percy claimed he had never seen her before that day.

Percy Jackson, her former student.

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