In April 1988, a study was conducted among the parents of Elementary School children to ascertain their knowledge of and attitude toward the soil-transmitted helminthiasis control programme in Jakarta. Sample selection was based on systematic random sampling and data were collected using a questionnaire. There were 192 respondents selected from 2 Elementary Schools. One of the schools participated in the soil -transmitted helminthiasis program and the other one served as control. The results showed that knowledge of all the respondents about soil-transmitted helminthiasis was relatively poor with generally good attitudes ; Almost all respondents (93,5%) thought that helminth examinations were needed and 96.8% of them agreed that examinations could be done at the school. Nevertheless 14.8% objected making payment for these examinations. It is recommended to improve the method of health education to the parents of children besides the improvement of environmental health efforts.