List of Articles High Schools Open Access Article Abstract Page Full-Text 1 - The relation of teacher’s use of knowledge management on student research motivation at Tehran city high schools. مهرنوش جعفری پریوش جعفری علی حسن بیگی Open Access Article Abstract Page Full-Text 2 - Providing a Model to develop a model for school principals based on a competency-based approach (Case Study: Tehran Secondary School Mozhgan Farhadfar abolghasem delkhosh kasmayi Mahmoud Safari 10.52547/istd.31103.8.30.73 Open Access Article Abstract Page Full-Text 3 - Studying the status of parameters of economic education in the humanities curriculum at high schools سیروس محمودی