Observation (Educational method) 7 School supervision 3 Classroom environment 2 Educational leadership 2 English language 2 High school teachers 2 Mathematics 2 Teacher-student relationships 2 Conduct of life 1 Conformity 1 Discourse analysis 1 Foreign speakers 1 Grammar 1 Interaction analysis in education 1 Rhetoric 1 School management and organization 1 Students 1 Study and teaching 1 Study and teaching (Elementary) 1 Study and teaching (Higher) 1 Study and teaching (Primary) 1 Study and teaching (Secondary) 1 Teacher-principal relationships 1