“…An analysis of the methodology of research conducted in Poland revealed that it mainly relied on authors' own questionnaires, whose psychometric properties were not verified. Before beginning our research, we carefully examined the existing tools for measuring attitudes toward inclusion and checked their Polish version in a pilot study: "Attitudes Toward Inclusive Education Scale" (Wilczenski, 1995), "Differentiated Attitudes Toward Inclusion Scale" (Lübke et al, 2018), "The Sentiments, Attitudes, and Concerns about Inclusive Education Revised (Forlin et al, 2011), "Teacher Self-Efficacy for Inclusive Practices Scale" (Sharma et al, 2012), and the "Scale of Teachers' Attitudes Toward Inclusive Classrooms" (Nishimura & Busse, 2015). Though they were designed relatively recently and the Polish education system is not very different from Western ones, the instruments did not answer the problems we wanted to pose in our research.…”