High school students Attitudes 16 Study and teaching (Secondary) 9 Education, Secondary 4 Social aspects 4 Study and teaching 4 Ability testing 3 Case studies 3 English language 3 Mathematics 3 Psychological aspects 3 Adolescent psychology 2 Data processing 2 Environmental education 2 High school teachers 2 Information literacy 2 Methodology 2 Reading comprehension 2 Science 2 Social conditions 2 Social values 2 Teenagers 2 Academic achievement 1 Accounting 1 Adolescence 1 Aggressiveness in adolescence 1 Aims and objectives 1 Alcohol use 1 Bilingualism 1 Books and reading 1