This course is divided into three lessons. The first lesson describes the role that teachers have in the recognition of a potential specific learning disorder and the relevance of a welcoming classroom climate and inclusive school. The second lesson singles out the attention to the psychological repercussions on self-esteem and the central role of parents and families, in addition to the school. The last lesson provides a general picture of dyscalculia and its prevalence in the population, of the role of the educational systems and wants to resume a list of general recommendations to raise the governments and educations ministries attention towards a correct behaviour in societies. The course closes with a test session.