The objective of the present study was to determine the prevalence of otorhinolaryngological morbidity among the cadets of the Nakhimov Naval School and propose the effective measures for its reduction and prevention. A total of 335 children at the age from 11 to 17 years were available for the examination. The analysis of otorhinolaryngological morbidity during September and October 2011 revealed the high frequency of acute respiratory diseases (46 cases) and maxillary sinus symptoms (12 cases). The newly recruited children accounted for 40% of the affected patients. The results of the screening carried out in the military educational institution suggest the necessity of improvement of the quality of primary medical screening, timely diagnostics and correction of pathological conditions. They can be used to formulate the long-range objectives for the improvement of individual recommendations for the medical observation of the cadets presenting with chronic ENT diseases.