Objetive. To determine the frequency of enteroparasites and risk factors associated to parasitosis in students at Ternera school. Methods. 83 samples of feces were collected, and a direct coprologic test was performed, by using lugol 1% and saline solution 0,85%; the Ritchie concentration technique was applied to negative samples, and to study associated risk factors, a closed survey was applied to the whole population Results and discussion. 64% of the population was found parasite; 57%, non-parasited; and the remaining 43% was polyparasited. The most frequent observed protozoos were: Blastocystis hominis (56 %), Endolimax nana (18 %), Entamoeba coli (9 %); while 13,2% corresponded to a Trichuris trichura moderated infested degree, this being the highest percentage. Conclusions. A high prevalence of protozoos was observed, Blastocystis hominis being the most frequent. In spite of good hygienic referred habits, a considerable percentage of the population was found parasited.