By interaction between teacher and student, we can decide teacher's expectation for students. The teacher's expectation for the students is the key to creating an effective classroom. Teacher and student interaction are two-way, students are related to teachers, teachers are related to students. If the teacher nurtures and builds self-esteem and mutual respect in the classroom, the teacher will build a positive relationship with the students. Years ago, the numbers of authority and authority in our society have been clearly defined.
Exchange between teachers and students is important for many reasons. The interaction between teacher and student greatly influences students' ability to go on to college, to do well at university, to interact with colleagues (Pianta, 1999). Teachers who build positive and safe relationships with their students have reported that their students leave school, are independent, cooperative and do not seem to be engaged in learning (Birch & Ladd, 1997; Klem & Connell, 2004 ). Teacher-student interaction affects classroom management and affects learning and growth. According to the development perspective, establishing an active teacher - student relationship will help students develop cognitive, social and emotional development and improve their mental health (Brazelton & Greenspan, 2000)
The measurement result is complete. In order to improve the effectiveness of the dialogue between teacher and student, we need to know how to evaluate them first. This research provides evidence for the type of interaction between teacher and student, promoting social and academic development. The Classroom Evaluation Scoring System (CLASS) provides a reliable and effective assessment of these interactions The CLASS tool provides three effective interactions - student characteristics' emotional support, classroom organization and Guidance support "will be evaluated. PK - 3 level classroom experience Each domain contains multiple effective interaction dimensions that help students succeed in school, such as teacher 's sensitivity, behavior management, feedback quality.