The book "Collective in the Educational System of the 21st Century" by Lyudmila Klenina offers a comprehensive analysis of the development of collectives in education within the context of the 21st century. It begins with a historical overview of the formation of educator and youth collectives in the first half of the 20th century, highlighting the ideas of A.S. Makarenko both theoretically and practically. The author examines the challenges and opportunities of collective education and collaboration in schools, universities, and extracurricular contexts. The focus is on the relevance of collective learning and working approaches for today's youth and the associated difficulties in implementing Makarenko's educational system in modern times. The book is aimed at professionals and students in the social sciences who wish to engage with current trends in pedagogy.