5 Season
186 Episode
Hey Arnold! - Season 4 Episode 2 Student Teacher (2004)
Helga's sister Olga comes home for spring break and becomes a classroom aid in Helga's class, much to Helga's chagrin.
- Country : United States of America
- Genre : Family, Animation, Comedy, Kids
- Studio : Nickelodeon
- Director : Craig Bartlett
- Cast : Spencer Klein, Francesca Marie Smith, Jamil Walker Smith, Olivia Hack, Anndi McAfee, Justin Shenkarow