Jyoti Kaur

Jyoti Kaur 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.

Soon they hear someone sliding down a rope and instead of Ms. Frizzle, appears a talkative red-haired woman who reveals herself to be Ms. Frizzle's sister, Ms. Frizzle.

Trivia