For detecting the group of children that have hearing disorders in a school health program, sweep testing, impedance audiometry, questionnaire of risk factors and pure tone audiometry were compared. Impedance audiometry was defined as the gold standard for the study. The authors suggest that combined questionnaire of risk factors and impedance audiometry screening should become the accepted way to screen schoolchildren in function of reasonable cost for the program and adequate predictive values of the first test. The prevalence of hearing disorders for children between five to 14 years was 20 per cent.