This study focuses on the effect of action research on monitoring primary school students' home practices and increasing parent involvement in education of their children in Turkey. The aims of this paper are to help the students transfer the knowledge that they have learned in the classroom into new situations, and to determine whether the students' behavioral changes are permanent or not. One classroom teacher, her students, and their parents were participated in this study. Data related to students' learning were collected by using teacher's journal, classroom observations, parent meeting records, and parents' letters. From the analysis of the qualitative data, it was clear that the classroom teacher obtained deep understanding of students' home practices, and she had a chance to plan actions in order to change the students' misbehaviors. Results also indicated that action research helped to increase parent participation in education.