RESULTS: There were no significant statistical differences among schools, and the last 30 day drug use rate showed the following results, for Botucatu and other schools (drug use range) respectively: alcohol in 50% (42-50%); tobacco in 7% (7-13%); inhalants in 8% (7-12%); cannabis in 6% (6-16%); benzodiazepines (BZD) in 3% (2-9%); cocaine in 0,5% (0,2-4%); amphetamines in 1% (0-1%).