Hey Arnold ! is an American animated television series created by Craig Bartlett that aired on Nickelodeon from October 7 , 1996 to June 8 , 2004 . The show centers on a fourth grader named Arnold , who lives with his grandparents in an inner - city boarding house . Episodes center on his experiences navigating big city life while dealing with the problems he and his friends encounter .

Question: what grade was arnold from hey arnold in
Answer: fourth