The purposes of this study are to explore mother′s involvement in children′s education and to examine its impacts on the school adjustment of poor family children. A total of 171 low-income mothers and their children attending middle school completed a structured questionnaire. Overall, the results show that the mothers tend to involve in their children′s education to some degree. But the extent of maternal involvement is not uniform across the types of involvement. In order to analyze factors that affect the school adjustment which is measured as grades and attitudes toward school life, path analysis is perfomed. The affective parenting is found to have indirect effects on school adjustment of middle school students through maternal involvement in their children′s education.