Aim of the study to evaluate adolescent health and factors influencing it in boarding schools of Vilnius city. Objectives to evaluate adolescent health; to estimate the prevalence of behavior and psychosocial environmental factors influencing health; to identify and evaluate the peculiarities of health services provided to adolescents. Methods. An anonymous survey of 191 pupils aged 11-18 and interview method of health care specialists in two boarding schools were applied in the study. State of pupils’ health was analysing medical records. Results were compared between two boarding schools. SPSS statistics software was used for date analyze. Values were considered significant, when p<0.05. Results. Most of disorders reported were attributed to respiratory diseases. Almost half of adolescents from both institutions reported facing health problems. 36.1 % of adolescents were reported not being involved in extra curricular physical activities, 42.9 % indicated being smoking, 27.7 % frequent alcohol abuse. 42.8 % of adolescents reported that their interaction with teachers was not satisfactory. 59.7 % of adolescents experienced bullying; one in every two pupils felt not being safe. The analysis of inter-institutional comparison points to the significant differences in smoking, alcohol abuse and bullying prevalence. Adolescents lack knowledge regarding stress coping and readiness to live on their own. Data gathered from adolescents demonstrated general satisfaction with... [to full text]