Purpose: This study aims to develop an integrative learning model to improve student character based on Islamic values sourced from the Qur'an and Hadith. This Research and Development research (research and development) using 4D development techniques (Define, Design, Development, and Disseminate). Method: The study was conducted at Insan Scholar Madani Serpong High School. Data were obtained through interviews, questionnaires, documentation, and observations. The interview, documentation, and observation instruments were analyzed using descriptive qualitative analysis, whereas the questionnaire instruments were analyzed using independent T test statistical analysis. Results: The results revealed that 1) the factual conditions of the learning process at Insan Scholar Madani High School before using the integrative learning model of character education based on Islamic values still used conventional learning, and there had been efforts to carry out contextual learning, but it was not effective. After using the integrative learning model, the learning process shows that this model has high benefits for students, a high level of ease of application, attracts students to participate in learning, and motivates students in the learning process. 2) Preparation of the initial design for integrative learning includes several phases: open, causal, hypothetical, and closed. The initial draft development steps included the development of syntax, social systems, response principles, support tools, instructional impacts, and derivative impacts. 3) Model development was validated through three validators: learning model expert validators, character development expert validators, and learning practitioner validators. 4) There was a significant difference in effectiveness between the use of integrative learning methods in the experimental class and conventional models in the control class in improving the character of students' Islamic values at the Insan Scholar Madani High School. Practicality is obtained from the results of evaluations carried out by teachers; this model has very good syntax, can be implemented well, and has very good assessment tools.