Kelley was born and raised in Glen Ellyn, a western suburb of Chicago, Illinois.[2] He is the fifth eldest of 15 siblings (nine brothers and six sisters),[2][1] and was raised as a Lutheran.[3]
When he was two, his mother took him and five of his siblings to Chicago to meet an agent since the neighbors next door did the same thing.[2] Kelley started appearing in commercials and gained his first role in a movie when he was in first grade and became a member of SAG at the age of four.[2] He would travel to Los Angeles annually for pilot season and stay at the Oakwood apartments.[2] Due to his being in and out of class, he was homeschooled during his last two years of high school.[2] When he turned 18, he moved to Los Angeles.[2][4]
Career
In 2002, he had a supporting role in Stolen Summer, which was a film made during Project Greenlight. He also played the role of Ryan James in two episodes of Smallville.
In September 2021, it was announced that a reunion film for Teen Wolf had been ordered by Paramount+, with Jeff Davis returning as a screenwriter and executive producer for the film. The majority of the original cast members, including Kelley, reprised their roles.[11][12]Teen Wolf: The Movie was released on January 26, 2023.