This study is aqualitative research on the implementation of Integrated Islamic Education. The Pioneer Schools (Sekolah Rintis) and the Integrated Islamic Education systems are solid evidence that not only Malaysia, but also Brunei has decided to settle on in promoting comprehensive education path for their future generations. However, some problems surface later, which are thought to impede a fully successful implementation of the Integrated Islamic Education in the country. This work aims to examine the extent of the implementation of the Integrated Islamic Education system and to evaluate whether there is ev[dence which requires revision of the current system. This research has identified, however, the need to look into the implementation of two main solutions to successfully accomplish the vision of assimilating the Integrated Islamic Education system in the country in the light of (i) the implementation of the Thoughtful Schooling system or the concept of Integrated Islamic Education system and (ii) the Educator’s capability to prepare and practice a good lesson plan, according to the ‘Eight Steps of the Teaching Learning Process’ in the classroom by focusing on the four factors on the Heart-mind concept of the Integrated Islamic Education system.