To review the current policies, practices and approaches used in teacher training, with regard to the European Observatory of EUN PARTNERSHIP AISBL, where there are records of the main guidelines of 30 European Ministries of Education, as well as of the remaining partners. Consequently, and also bearing in mind the answer to the question "how do students learn?", a European Benchmark for Teacher Training will be created by EUN, to be presented as an innovative and current product, based on the idea "Teachers Make a Difference".