“…Other studies investigated the relationship of instructional leadership with organisational concepts such as teacher work attitudes (Duyar, Bellibas & Gümüs, 2013), teachers' self-efficacy (Bellibas & Liu, 2017), professional development (Gümüs & Bellibas, 2016), organisational commitment (Serin & Buluç, 2012), conflict resolution (Arslantaş & Özkan 2012), self-efficacy and collective efficacy (Çalık, Sezgin, Kavgacı & Kılınç, 2012), organisational climate (Ayık & Şayir, 2014), school climate (Şahin, 2011;Bellibas & Liu, 2018), organisational citizenship behaviours (Ünal & Çelik, 2013), academic optimism (Yılmaz & Kurşun, 2015) and organisational health (Parlar & Cansoy, 2017). In a review of 35 studies on instructional leadership conducted in Turkey between 2000 and 2017, researchers of these studies were found to mostly employ the survey design, a quantitative research method (Cansoy & Polatcan, 2018). Moreover, they reported based on teachers' perceptions that the most often performed behaviour of school principals as instructional leaders was sharing the objectives and vision of the school.…”