“…In particular, the analysis of the links between general educational pedagogical knowledge, self-actualization, professional burnout of teachers, and the level of their professional competency and professionalism has been carried out (Lauermann & König, 2016); the impact of the emotional strain and social support of the teachers on the development of the burnout syndrome of the qualified teachers in Italy and Switzerland has been investigated (Fiorilli et al, 2015); dependence of the effectiveness of co-education and the level of learning achievements on the personality type (Emerson, English, & McGoldrick, 2016), and on genetically determined character traits, not solely on the learners' intellect, has been grounded (Krapohl, 2014); the problems of adult education in the modern world, among them that of school teachers, have been analyzed (Kokkos, 2015;Németh, 2014); the role of social maturity (Nagra & Kaur, 2013) and that of integrating technologies into the practice of school mathematics (Monaghan, 2002;Tabach, 2012) in the development of school teachers' professionalism has been disclosed; the support of co-education through the development of pedagogical knowledge by means of technological support has been investigated (Alayyar, Fisser & Voogt, 2012); dependence of the quality of teaching and developing students on the teachers' professionalism has been proved (Kunter et al, 2013), etc.…”