The purpose of this study was to investigate how children from low-income families perceived their family strength, ego-resilience and school adjustment. The relative magnitude of effects of family strength, ego-resilience and school adjustment were compared. Data were collected from 217 children in grade 4 through 6 who were attending local child welfare centers located in Seoul, Korea. The key research findings were as follows. Ego-resilience and perceived family strength were related to school adjustment among children in poverty. The relatively greater effect of ego-resilience implied that programs for children in poverty need to focus on developing interpersonal relationship skills or coping strategies designed to enable children from disadvantaged environments to deal with stressful events and to promote their ego-resilience. Additionally, the recovery or enhancement of family strength and ego-resilience will be effective at protecting and solving various adaptive problems that children from low-income families may experience at school.