Ms. Stevenson was a Kindergarten teacher at South Park Elementary, taking the role following Mr. Garrison's promotion to fourth grader teacher. She made her introduction and departure in "Miss Teacher Bangs a Boy".
Ms. Stevenson served as the Kindergarten teacher for some time, during which one of her students, Ike Broflovski, developed a crush on her, passing her love notes and drawing her with hearts around her. When this was brought to her attention by hallway monitor Eric Cartman, she asked him to stay behind after class and tried to discuss why these feelings were inappropriate. She was instead revealed to be a pedophile when she became sidetracked and instead admitted she admired him and found him "mysterious" and acknowledged having feelings for him, leading them to start a romantic relationship, going on many dates together, as well as an intimate relationship involving sexual intercourse, which cannot be consensual due to the fact Ike is 3-4 years old. She tried to keep her relationship secret from the rest of the town.
Ms. Stevenson's relationship with Ike was exposed by Kyle, who discovered them in the bath together, and she insisted that he was mature enough for a relationship despite his age. They were soon caught and turned in by Cartman when he caught the couple making out in the halls. She falsely claimed to be an alcoholic and attended rehabilitation for her drinking problem as a way to escape jailtime, during which she revealed to a counselor that her uncle would make her and her twin sister kiss and would take photographs.
She then kidnapped Ike and the two prepare to flee to Milan, claiming that she and Ike dreamed of buying a house in Tuscany. They were pursued by Cartman and Kyle, who brought along Cartman's hallway monitor crew, storming the hotel to stop the couple from fleeing the country, and tracking them to the roof of the airport Hilton. They were cornered by the boys and the police, who demanded that she surrender. Not wanting anyone interfering with their love life, Ms. Stevenson said she and Ike would jump off of the building so that she could be with Ike for eternity. However, Kyle convinced Ike that he was too young for a relationship at his age. Ms. Stevenson did not listen to reason and jumped, but Ike did not. Ms. Stevenson realized Ike had abandoned her shortly before she died on impact to the ground.
- Child Molestation: In "Miss Teacher Bangs a Boy", she has a sexual relationship with Ike Broflovski. As he is underage, the relationship cannot be considered consensual by legal (or moral) standards.
Ms. Stevenson wore a dark gray sweater with a pink shirt underneath. She wore a blue knee-length skirt and black high heeled shoes. She had long blond hair in a ponytail, and was considered by most of the men in town to be attractive.
- She, Herbert Garrison, Mr. Harris and Chef (after brainwashing) are all teachers at South Park Elementary who have exhibited inappropriate sexual behavior towards children.
|South Park Elementary staff|
|Coach Miles | Girls' Volleyball Coach | Herbert Garrison | Jose Venezuela | Mitchell | Mr. Derp | Mr. Garrett | Mr. Harris | Mr. Mackey | Mr. Meryl | Mr. Thompson | Mr. Wyland | Mrs. Streibel | PC Principal | Pearl | Recess Supervisor | Richard Adler | Strong Woman | Substitute Teacher|
|Diane Choksondik | Jerome "Chef" McElroy | Margaret Nelson | Miss Claridge | Mr. Conners | Mr. Slave | Ms. Ellen | Ms. Stevenson | Nurse Gollum | Principal Victoria | Randy Marsh | Veronica Crabtree|