TY - JOUR AU - Naiji, Nowruz AU - Jahanshahi, Fareba AU - Youawfi Saeedabadi, , Reza AU - Espahbadi, Kambiz TI - The Relationship between Self-efficacy and Effectiveness of Principals from the Perspective of Principals and Teachers of Secondary and High Schools (Case Study of Chamestan Region) JO - Curriculum Development and Educational Planning Research VL - 9 IS - 2 SP - 75 EP - 84 PY - 2019 DO - ER -