He is of part Irish ancestry on his mother's side. Ashton Kutcher was raised in a conservative Roman Catholic family, with an older sister, Tausha, and a fraternal twin, Michael, who had a heart transplant when the brothers were young children. Ashton Kutcher attended Washington High School in Cedar Rapids for his freshman year before his family moved to Homestead, Iowa, where he attended Clear Creek Amana High School. In a 2010 interview on Late Night with David Letterman, Ashton Kutcher claimed to be an all-state linebacker who averaged 15 tackles per game in high school. According to a former coach, however, Ashton Kutcher played sparingly as a wide receiver on a team that won only two games in his entire high school football career. Ashton Kutcher also appeared in school plays.
Ashton Kutcher's brother suffering from cardiomyopathy caused his home life to become increasingly stressful. He has stated that "I didn't want to come home and find more bad news about my brother" and "kept myself so busy that I didn't allow myself to feel". Ashton Kutcher admitted that during adolescence, he contemplated committing suicide. At thirteen, he attempted to jump from a Cedar Rapids hospital balcony, with his father intervening in the incident. Ashton Kutcher's home life worsened as his parents divorced when he was sixteen. During his senior year, he broke into his high school at midnight with his cousin in an attempt to steal money; he was arrested leaving the scene. Ashton Kutcher was convicted of third-degree burglary and sentenced to three years' probation and 180 hours of community service. Ashton Kutcher stated that although the experience "straightened him out", he lost his girlfriend and anticipated college scholarships, and he was ostracized at school and in his community.