“…Research studies in this area have shown that many types of teacher professional development are insufficiently effective in supporting changes in teaching practice and student progress (Darling-Hammond, Hyler, Gardner, 2017;Bilač, Tavas, 2011;Strugar, 2012). Darling-Hammond, Hyler and Gardner believe that high-quality professional development needs to do the following: a) focus on the content of the curriculum; b) involve active learning; c) foster cooperation among participants; d) use practical examples of good practice; e) provide professional support focused on individual needs of participants; f) provide feedback and encourage reflection on one's own teaching practice; g) ensure sufficient time for studying, practising, reflecting and implementing new strategies and other changes in one's teaching practice (Darling-Hammond, Hyler, Gardner, 2017).…”