“…Most of the articles included in the review (fourteen out of a total of twenty-one) use a qualitative methodology for the collection and subsequent analysis of data. One of the most commonly used data collection instruments is the semi-structured interview (Ashley-Welbeck & Vlachopoulos, 2020; Bueno-Villaverde et al, 2018; Sperandio & Kong, 2018; Palmer, 2016; Savage & Drake, 2016; Solano-Campos, 2017; Lochmiller et al, 2016; Quaynor, 2015; Law et al, 2012; O’Boyle, 2009; Güler & Yaltırık, 2011), and subsequently conducting a thematic analysis (Braun & Clarke, 2006) from which independent categories of analysis emerge (Sparkes & Smith, 2014). Focus groups are also used in two articles (O’Boyle, 2009; Sperandio & Kong, 2018), as well as direct observation by researchers of the development of classes in the different educational centres in which the research is conducted (Quaynor, 2015; Solano-Campos, 2017; Lochmiller et al, 2016; Kauffman, 2005; Palmer, 2016).…”