Results of the study support the hypothesis that manifestations of emotional problems among adolescents play a mediating role in the link between attachment to parents and teacher-academic worries about the middle school transition. Specifically, the results show that attachment security to parents, especially the mother, predict fewer anxiety symptoms among adolescents, which in turn, lower levels of teacher-academic worries about the transition to middle school. Study implications and limitations were reported and discussed. In a sample of 626 young adolescents in sixth grade, this study examined how attachment to mother and father predicted worries about academic demands and relationships with teachers generated by the transition from elementary to middle school through its contribution to adolescents' emotional problems (depression and anxiety). Tables, figures, and references