Kagasoff graduated from Montclair Preparatory High School in  where he played on his school's baseball team. After deciding to return to Los Angeles, Kagasoff landed the lead role in a local theater production of Suburbia , a play that the eponymous film was based upon. After studying acting, he began auditioning for television and film roles. The show ran for five seasons. It was announced on February 24, that Kagasoff had been cast as Alex in the Fox pilot Delirium , based on the novel by Lauren Oliver.