This study aims to test the effectiveness of a new model of Islamic parenting based on family religiousness to solve the low literacy issue in Muslim families. Using a mixed method with triangulation design, in Study 1, the researchers conducted action research by delivering six sessions parent training program to 10 women with children aged ±11 years old, grouped into high and low-literate families. Each session was followed with practice at home guided by facilitators. Data were collected using interviews and parents’ reflection journals and were analyzed using content analysis. In Study 2, concurrent to Study 1, we conducted quasi-experimental research using one group pre-test and post-test design to test the model’s effectiveness. Before and after the programs, we administered the Family Literacy Questionnaire to the women and the Literacy Activity Questionnaire to their children. The data were analyzed using Wilcoxon signed rank test to test differences between pre-test and post-test scores. The program was perceived as impactful and highly appreciated by the participants, who expected its continuation in the future. The Islamic parenting model effectively enhanced women’s family literacy in low literacy groups and children’s literacy activity in both groups.