The alcohol is the most frequent substance, which become use of and abuse between the adolescents.

The aim of this study is the recording, the estimate and the cross-correlation with social - demographic elements for the behaviors of adolescents as long as it concerns the consumption of alcohol.

The sample constituted 225 adolescents students that studied in the 1st and 2nd Professional Lycea-schools of Tripolis, Greece, which had mean of age the 16,8 years. The questionnaire that was used has as base the equivalent that uses Youth Risk Behavior Surveillance System of American Center for Disease Control.

The attendance in the research was anonymous and voluntary.

Almost the total of adolescents (94,7%) reports that tried some alcoholic drink.

The half students percentage 50,7%) report that they have drunk 40 or more times alcohol.

The consumption of alcohol is bigger in the boys.

The mean of first contact with alcohol they are the 13,1 years. The boys drink the first glass in smaller age than the girls.

Systematically consume alcohol the 39,2% of school population and in particular the boys drink systematically more often from the girls.

Excessive consumption alcohol reports that made at least 3 times the last month of the 23,8% of school population with proportion between the boys and girls 3:1.

The consumption alcohol is moved in worrying high levels. The results that show the make are the small age of first contact, as well as the high rates of use and abuse alcohol.