The book "Schools of Hellas. Essay on the practice and theory of ancient Greek education from 600 to 300 BC. is." written by Kenneth J. Freeman. In this book, the author examines the development of the education system in ancient Greece during the period from 600 to 300 BC. It examines both the practical and theoretical aspects of Greek education and reveals the key elements of this system that influenced the formation of Greek culture and thought. This book will be a useful source of information for those interested in the history of education and ancient culture.