fifth grades, respectively. Frequency of infestation in the third grade elementary students with head lice was higher than other grades of education. There was not any significant association between the infestation and grade level. There was a significant association between the infestation and father’s occupation (P=0.04). Nearly, 0.42% of fathers of students infested to head louse were workers. No significant relationship between the level of education of father and infestation was found (P>0.05). The mother of all infested students to head louse were housekeeper. There was a significant association between the mother education level and infestation of children (P=0.0001). About 1% of students were living in the fiveperson families, having head lice infestation. Chi-square test between the two variables of household and head lice infections did not show a significant relationship. Risk of head lice among students with no bathroom in the house were significantly higher than students who had a bath at home. The Fisher’s exact test statistic showed a significant relationship between bath at home and pediculosis capitis (P=0.02). Nearly, 47.1% of infested cases took weekly shower and 53% of them used shared personal belongings such as hair brush, head cover, hat and so on. A total of 64.7% of the cases kept long hair; 88.2% had straight hair and 11.8% had curly hair. Approximately, 58.8% of students with head lice once, 23.6% twice and 17.6% three times comb their hair per day. About 88.2% students with head lice complained of itching. A total of 53% suffered from wide spread itching and 29.4% and 17.6% complained of itching behind the ears and head. Fisher’s exact test showed a significant difference between infestation to head louse and previous history of disease (P=0.0001). Approximately, 65% of the cases infested to head louse were infested for the second time. In this study, 47.1% of the subjects infested to head louse referred to physician and consumed medication. Fisher‘s exact test showed a significant correlation between lack of medication and head lice infestation (P=0.0001). There was a significant association between the nationality and infestation. The Iranian student was less infested than the other nationalities in this study (P=0.0002). During the review period, health teachers were present in all public schools of Aran and Bidgol.