ABTRACT :
         Management and control of head lice infestation in schoolchildren was performed in the primary schools in Nonthaburi province in 1994 with the cooperation of the school teachers. The result indicated that 27.2 % of schoolgirls and 0.3% of schoolboys were infested with head lice. The infested schoolchildren were interviewed to obtain information on their family backgrounds and behaviors in order to identify the transmission factors. The control program was conducted by given permethrin powder to the teachers for application to the infested children. It was found that after one month of chemical application 68.5% of schoolchildren were free from head lice infestation. Transmission of head lice mainly occur in school among the classmates therefore regular treatment of head lice in schoolchildren and health education are required for the success of control program.