“…To this end, a variety of PD forms have been introduced and practiced. Some examples of these include exploratory action research (e.g., Akcan et al 2019;Dikilitaş and Çomoglu, 2022), critical friend groups (e.g., Carlson, 2019;Vo and Mai Nguyen, 2010), lesson study (e.g., Cajkler et al, 2014;Hurd and Licciardo-Musso, 2005;Uştuk and Çomoglu, 2021), reflection groups (e.g., Aydın and Çomoglu, 2023;Mayoral, 2014), professional learning communities (e.g., Goodyear et al, 2019;Owen, 2016), curriculum study groups (e.g., Heikkilä, 2021;Unlu, 2018), and mentoring (e.g., Gjedia and Gardinier, 2018;Suchánková and Hrbáčková, 2017;Walters et al, 2019). CO has been utilized as a tool in some of these contemporary forms of PD.…”