The article is devoted to the content of theoretical and practical training of future teachers on the problem of non-discriminatory educational space within the author’s course “Non-discriminatory educational space”. The content of the theoretical training of future teachers on the specified problem should reflect the content of the lexical-semantic groups of the non-discriminatory educational space, which include the following: legislative imperative regarding human rights, child rights, national minorities rights, gender equality, non-discrimination in education, education of children with special educational needs and inclusive education, anti-discrimination examination of textbooks, etc.; scientific, educational, methodical, visual materials that investigate, highlight and shape the opinion of society on the concepts of gender identity, ethnic origin and citizenship, migration, multiculturalism, social affiliation, place of residence, family composition, religious and political beliefs, etc.; concepts of tolerance and anti-bullying, etc.; concepts of critical, inclusive, feminist, gender pedagogy, etc.; non-discriminatory language in education: gender-sensitive, non-sexist and non-androcentric, feminitives, etc. Theoretical training involves the formation of awareness of the phenomena of non-discrimination and anti-discrimination in education, the normative and legal basis of non-discrimination in education, the scientific and methodological basis of the strategy of non-discrimination in education, gender attitudes and gender competence of the pedagogical community, linguistic sexism and gender-sensitive/non-discriminatory language, theoretical and methodological principles of gender and anti-discrimination examination of textbooks. Practical training of future teachers on the problem of non-discriminatory educational space involves forming in them the skills of anti-discrimination examination of the textbooks for primary school and creation educational content on the basis of non-discrimination.
 Keywords: professional teacher training; non-discriminatory educational space; non-discriminatory approach in education; creation of non-discriminatory educational content; thesaurus of non-discriminatory education; non-discriminatory teaching; educational and methodological content on the basis of non-discrimination; diversification of educational programs.