O objetivo deste trabalho foi identificar o uso de bebidas alcoólicas pelos estudantes da maior escola pública da cidade de Cajazeiras, PB. Realizou-se estudo descritivo transversal, com abordagem quantitativa, e a amostra ficou composta por 300 alunos de uma escola pública da cidade. Verificou-se que 71% já tinham usado álcool, 66,4% fizeram experimentação da droga entre 13-17 anos, 69,4% usaram por diversão, 59,5% já se embriagaram ao consumir álcool, 21,3% experimentam em bares/boates e 39,4% beberam com maior frequência em bares/danceterias/boates. Constatou-se que há alto consumo de álcool entre adolescentes, sendo necessária a implementação de ações educativas, visando a diminuição do consumo. Descritores: Alcoolismo; Adolescentes; Drogas Ilícitas. alCohol use among students of a publiC sChool in Cajazeiras, pernambuCo* The objective of this study was to identify the use of alcohol among students of the largest public school in Cajazeiras, Pernambuco. This cross-sectional descriptive study was performed with a sample of 300 students. It was found that 71% had drunk alcohol before; 66.4% had their first drink when they were between 13-17 years old; 69.4% drank for fun; 59.5% have already gotten drink from consuming alcohol; 21.3% had their first drink at bars/night clubs; 39.4% usually drank at bars/dance clubs/night clubs. It was found that alcohol use is high among adolescents, thus there is a need to implement educational actions, aiming at reducing alcohol use.