High schools 149 High school students 59 Education, Secondary 48 Administration 33 High school teachers 32 Curricula 25 High school teaching 21 Examinations 19 Employment 18 High school graduates 18 History 18 Education 16 Junior high schools 16 Supply and demand 16 Case studies 14 School management and organization 14 Comprehensive high schools 13 High school buildings 12 High school principals 12 Social conditions 12 Study and teaching (Secondary) 12 Attitudes 11 Youth 10 High school libraries 9 Students 9 Evaluation 7 High school facilities 7 Universities and colleges 7 Academic achievement 6 Laboratories 6