“…However, the different actors involved in university classifications may not be fully aware of these difficulties, or the complexity of the existing processes and criteria for the development of rankings, even though they show great interest in knowing what position a university is in (Al-Juboori, Su, & Ko, 2012). Each ranking system uses different sources of information, some of which are of questionable transparency (Anowar et al, 2015), and evaluates universities according to its own criteria using indicators that do not cover all the activities that a university can develop, strongly focusing on the institutions' investigations (Ganga-Contreras, Martin, & Viancos, 2019). For example, most ranking systems are based essentially on research activities (Margison, 2014), including indicators such as research productivity, research income or papers published in Nature and Science; leaving aside the other functions of the universities (Figure 1).…”