This study aims to measure the level of teacher practice in teaching the subject of Maharat al-Quran Integrated Curriculum Tahfiz (KBT). A total of 621 teachers were made respondents in this study. This study is in the form of a cross-sectional survey involving teachers from KBT secondary schools throughout Malaysia. While the sampling method of this study uses stratified random sampling method. Data were analyzed using IBM Statistical Package for Social Science (SPSS) software version 25.0 Descriptively to determine the mean value, standard deviation and percentage. The findings of the study show that the level of teacher practice in teaching the subject of Maharat al-Quran KBT is at a high level. In conclusion, this study successfully highlights the uniqueness of the findings that teachers in secondary schools who implement KBT practice well the teaching of tajwid law, manners of the Quran, recitation, knowledge of Qiraat, practice of Qiraat and Rasm Uthmani in the subject of Maharat al-Quran. The science of tajwid is the main teaching emphasized by the teacher to enable students to learn the Quran. The implication is that tahfiz teachers have a role to teach Quranic skills because teachers are the driving force behind a built curriculum.

This study aims to evaluate the content validity and reliability of the fuzzy Delphi instrument of Islamic Cognitive Domains. This study is based on the Development Design Research methods. The content validity of the instrument was analyzed using the Content Validity Index (CVI) by four experts. For the reliability, there were 30 respondents. The results of the analysis show that the overall value of content validity using CVI is 0.8. The value of Cronbach Alpha is 0.97. It means that the instrument has high validity and reliability.