This study analyses the impact of the occurrence of stressful life events in adolescent adjustment. To this end 101 adolescents were studied twice, first when they were in middle adolescence (15-16 years) and then two years later (17-18 years). Participants filled out questionnaires about stressful life events, family relationships and adolescent adjustment. The results show a significant influence of this type of events on life-satisfaction, emotional problems and, specially, on externalizing problems. Be-sides, the use of a person-centered analysis revealed that resilient adolescents (high adversity and few externalizing problems) had family relationships of a better quality than maladaptive peers (high adversity, many externalizing problems). So, supportive family relationships during adolescence can be considered a protective factor against the negative consequences of stressful life events.