Comparative Study of Post-Marriage Nationality Of Women in Legal Systems of Different Countries The Implementation of Classroom Management in Teaching and Learning Activities 562 International Journal of Multicultural and Multireligious Understanding http://ijmmu.com editor@ijmmu.com ISSN 2364-5369 Volume 8, Issue 4 April, 2021 Pages: 562-579 The Implementation of Classroom Management in Teaching and Learning Activities Abdul Sahib 1 ; Sudarwan Danim 2 ; Bambang Sahono 2 ; Manap Somantri 2 1 Institut Agama Islam Negeri (IAIN) Curup, Indonesia 2 Universitas Bengkulu, Indonesia http://dx.doi.org/10.18415/ijmmu.v8i4.2587 Abstract The general objective of this research is to describe the implementation of classroom management in teaching and learning activities at Madrasah Aliyah Negeri Rejang Lebong. Specifically, the purpose of this research is to discuss the teachers’ implementation of classroom management regarding (1) How the teacher maximizes the students’ freedom of expression during learning activities, (2) How the teacher develops the students’ expected behaviours and eliminate the unwanted ones. The research method used in this study is descriptive qualitative method. Observation, interviews and documentation were used as the technique for collecting the data. The research subjects were five people consisted of four teachers and one principal. The research results revealed two things in classroom management. (1) The cultivation of prayer before learning and learning culture is a meaningful experience to increase devotion and create or maintain an orderly class atmosphere; (2) The teacher can create a dynamic, optimal learning atmosphere and open interaction for the emergence of the students’ critical thinking. Keywords: Classroom Management Implementation; Teaching and Learning Activities Introduction Many teachers do not really understand and lack of knowledge regarding the importance of various kinds of classrooms management. They only focus on implementing K.13 in line with the 2016 Permendiknas and how National Education Standards (SPN) can be fulfilled (Government Regulation No.13 of 2015 concerning National Education Standards , nd). The government regulation number 20 of 2003 in article 39 Paragraph (2) concerning the national education system states that educators are professional staff (regulation No. 20 of 2003 concerning the National Education System, n.d.). Professional is a job or activity that is carried out by a person and becomes a source of living income that requires expertise, proficiency or skills that meet certain quality standards or norms and requires professional education. 14 of 2005. Professional teachers are teachers who have special skills such as teachers whose expertise is teaching and teaching (Government Regulation No. 14 of 2005 concerning Teachers and Lecturers, n.d.). This expertise is gained by having certain competencies which in carrying