Education, Secondary Curricula 20 Study and teaching (Secondary) 20 Attitudes 11 Teachers 11 Academic achievement 10 School management and organization 10 Computer-assisted instruction 9 Educational leadership 9 Evaluation 8 Study and teaching 8 Curriculum planning 7 Management 7 Educational technology 6 High schools 6 Parent participation 6 Rating of 6 Students 6 Finance 5 School budgets 5 Case studies 4 Examinations 4 Islamic religious education 4 Social aspects 4 Boarding schools 3 Chinese language 3 Computer literacy 3 Data processing 3 Education 3 Educational tests and measurements 3