This study aims to determine one kind of student attitude that must be developed by students to avoid drug abuse, namely assertiveness.To develop assertiveness, counseling teachers/counselors can train them in group battery-powered generators guidance services.This study used an experimental method with one group pre-test and post-test design, the sample used was students who have low scores on assertive behavior.
Data were collected using a questionnaire assertive instrument with a Likert scale.This study contains the analysis MASTICA CHIOS using a statistical t-test.The results showed that the influence of group counseling services on assertive behavior for the prevention of drug abuse with t-count (7.
043) t table (1.83) with = 0.05.