RESUMEN
In this study, 152 students (90 males & 62 females) of primary (5th & 6th grades, 52 males & 30 females) and preparatory (1st & 2nd grades, 38 males & 32 females) schoolchildren of different age and sex group inhabited in two endemic villages with Schistosoma mansoni in Taiz Govenorate were examination. The highest prevalence and intensity of S. mansoni were-among males at the age group from 10 - < 12 years. A significant relationship was recorded between prevalence and intensity of infection and those who using pond water for human usage. The prevalence was significantly higher among children who received previous praziquantel treatment as well as those who didn't have TV, Radio and/or Video. The results were discussed on the light of certain variables.