Awat Sirdar Wahdi 2020. Using Factor Analysis (Principal Component Method)to Determine the Most Important Factors Affecting Parents’ Choice of Private Schools Over Governmental Schools for Their Children in Erbil. Zanco Journal of Human Sciences . 24, 3 (Oct. 2020), 216–237. DOI:https://doi.org/10.21271/zjhs.24.3.13.