The author proposed a model to explain how parental involvement and school engagement related to academic performance. Participants were (671) 9th and 10th graders students who completed two scales of “parental involvement” and “school engagement” in their regular classrooms. Results of the path analysis suggested that the parental involvement influences school engagement directly. Also, parental involvement influences academic performance indirectly through its effects on school engagement. In addition, school engagement influences academic performance directly.