The primary questions addressed by this research are the followings: Have the OPAC interfaces of elementary school libraries been designed user-friendly; What difficulties do OPAC searchers experience in using OPACs; How do they perceive the system after searching it; Finding the answers of those questions the problems of OPAC as a searching tool were grasped and recommendations were suggested in order to improve the system. An experiment was conducted and 35 elementary school students performed 5 searching tasks. The searching behavior of OPAC searchers was analyzed thoroughly. The data of their perceptions about the system was collected through a questionnaire after completing the tasks.