Mrs. Klemperer is the Kindergarten teacher at Third Street Elementary School. She first appears in the episode Wild Child. Throughout the series she is only shown without a neckbrace once, teaching kindergarteners with real clothes on and acting normal, in the episode 'Mikey's Pants.' One can assume that the kindergarteners caused her neck injury.

Voice: Salli

Kindergarten Teacher

Friends: Miss Finster, Principal Prickly, Miss Grotke, TJ Detweiler, Vince LaSSao, Ashley Spinelli, Gretchen Grundler, Mikey Blumberg, Gus Griswald, Randall Weems and Menlo

Enemies: Earwin Lawson, Gelman, Conrad Mundy, Greg Skeens, Sue Bob Murphy, Lazy Kid, Chucko Kowalski, Jocko, Buster, Cheay, Koreo and Kurst the Worst 

Likes: Teaching kindergarteners with real clothes on and acting normal and keeping kindergarteners in order 

Dislikes: Kindergarteners going wild and kindergarteners chasing after Big Kids

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