Jenna first appeared during Max's dream sequence in the beginning of the film. He managed to deliver her paper after evading the Evil Ice Cream Man, and was about to kiss her when he arrived and ended up blasting her face with one of his ice cream pellets when the dream ended.
Jenna's first on-screen appearance was shortly after Max's life science class was dismissed for the day. He was knocked down by being hit by the door while mesmerized with her beauty, and she then asked if he was okay. She didn't initially remember who he was until he told her that she was on his newspaper delivery route. After some exchanges, they part ways, with him claiming that he plays the bassoon in response to learning that she plays the clarine (specifically the first chair), although he leaves out that he didn't actually bring the bassoon specifically because he wanted to be cool. When band class came around, Jenna and Megan met, to which the meeting was sour due to telling Megan to get off of her chair.
Later on, Jenna invited Max to a milkshake party at Buddy's, when he was trying to get to his friend's house for a going away party in his honor (he was going to move to Chicago). He says no at first saying he had to go there, but she starts flirting with him, eventually bending down to him and saying, "one milkshake". He ultimately accepted with one milkshake. While walking, she puts her arm around him. At the party however, it ultimately turned out to be more than one milkshake, and he told her and her friends that Chad (the animal that pounced on Principal Elliot T. Jindrake after he attempted to halt a food fight and humiliated him in front of the superintendent) was actually a chimpanzee and not a monkey, and mentioned that he had "phatitude."
The next day, after Principal Jindrake makes his announcement to disband art, music, P.E., and pretty much everything fun as a result of Max's hijinx, Jenna denies ever liking him, viewing him only as a paperboy when her friend tells her irritably that he got them into trouble.
After the students managed to get rid of the bullies, Jenna offers Max to come to a party that her friends are having (although also noting to Megan that its only for ninth graders besides him), but he turns it down.
- Her theme song is Britney Spears' "Hit Me Baby: One More Time."
- Brooke Anne Smith won a Young Artists award for Supporting Young Actress for her role.