 Aim: The purpose of this cluster randomized trial is to investigate whether the brief 16 session-long Interpersonal Counseling IPC is effective in the treatment of depressive symptoms among 13 to 16-year-old adolescents in the routine care provided by school health care professionals consisting of school health care nurses, school psychologists and school social workers who have been trained in IPC. The participants are adolescents who either seek help from these school heath care professionals or are referred to them by other school workers or their families. 