Jyoti has her dark brown hair in a ponytail and she has brown eyes. Her outfit consists of a purple hairband, gold earrings, a purple and indigo short sleeve jacket, black shorts, yellow socks and purple and white sneakers with white stripes in between.
Jyoti is a new student in Ms. Frizzle's science class and replaced Phoebe, who went back to her old school. Arnold tells her about how the class has an ecosystem and that nothing should change, except her. Jyoti is delighted after she hears stories of their famous- or, for Arnold, "infamous"- field trips. Arnold offers Jyoti Phoebe's old seat, revealing that she went back to her old school.