This study aims to analyze the level of knowledge of the on forms of transmission and prophylaxis of the main human verminosis among students of a public school. To evaluate the knowledge of the students, a questionnaire with closed questions was applied, adapting popular scientific language, involving aspects of etiology, evolutionary cycle, transmission, symptomatology, diagnosis and prophylaxis. The study included 185 high school students aged between 14 and 21 years, most of them female. Evaluating the questionnaire responses, it was that 54.59% reported knowing what verminosis are and most cited as better known to ascariasis, 70.81% stated that this disease is caused by worm. 56.75% confirmed that they have already participated in lectures on prevention of intestinal parasites and/or verminosis, 45.94% said their teachers work the content on intestinal parasites and/or verminosis. Most research participants cited abdominal pain, nausea and vomiting as majores suspicions of verminosis. 74.05% of students reported that verminosis are linked to a lack of sanitation coverage. In view of the data obtained in this research it was possible to realize that it is necessary to reformulate the teaching-learning process for what is taught at school students can apply in their daily lives thus promoting the improvement of public health.