Ikhwan As-Shafa is one of the Islamic groups active in education. They belong to the main Islamic education school of thought, namely the Rational-Religious school. In this school of thought, Islamic education has a modern in this school approach but is still based on Islamic values. This is in accordance which is Salaf boarding school. Tarikh Islam taught in modern Islamic boarding school is very important because it has the aim of forming good student characters such as the character of the Apostles and the Companions. With the Rational-Religious flow approach, students will be challenged to be more critical and creative. The Rational-Religious school of thought is the theoretical basis for this learning. This study aims to analyse the educational thought of Ikhwan As-Shafa and the design of the curriculum objectives of Tarikh Islam in modern Islamic boarding schools then understand the design of Tarikh Islam material taught in modern Islamic boarding schools and analyze the design of Tarikh Islam learning experience in modern Islamic boarding schools. This research uses the literature review method with a crisis analysis approach. There are two types of data sources, namely primary data sources derived from the book Rasa'il Ikhwan As Shafa and secondary data sources derived from journals that discuss Islamic education thought according to Ikhwan As-Shafa. The analysis was carried out by comparing and critiquing various sources to identify the harmony between Ikhwan as-Shafa's thoughts and the learning objectives and methodologies applied in Islamic boarding schools. The findings are expected to provide new insights into the relevance of rational-religious educational thought in the context of modern education and its contribution to curriculum development that is more integrative and holistic. The result of this research is Ikhwan as-Shafa's Educational Thought emphasizes the balance between intellectual and moral development to form knowledgeable and moral individuals. The curriculum of Tarikh Islam in modern Islamic boarding schools is designed to produce. students with good character through comprehensive materials and interactive learning methods. The design of teaching materials and content of Tarikh Islam in modern Islamic boarding schools includes learning about important events in Tarikh Islam, such as the life of the Prophet Muhammad SAW and wars, as well as the wisdom behind them. This material is designed to integrate aspects of historical knowledge with spiritual values, to form students with noble character and critical thought. The design of the Tarikh Islam learning experience based on Ikhwan As-Shafa's thought in modern Islamic boarding schools emphasizes the active involvement of the five senses and the soul. This approach connects historical knowledge with the application of Islamic values in everyday life. The advantage of this curriculum design is to support students to achieve the learning objectives of Tarikh Islam, the disadvantage is to balance the intellectual and spiritual aspects. Based on the conclusions, it is suggested that the Tarikh Islam curriculum in modern Islamic boarding schools should integrate the concept of holistic education of Ikhwan as-Shafa, by balancing the rational and spiritual aspects. Further research is needed to deepen the analysis and explore its implementation in various contexts of modern Islamic boarding school education.