The relevance of the article is related to the need to modernize school education in Ukraine in the context of reform on the basis of the best world standards and models. The purpose of the article is to reveal the essence of Kaizen technology in secondary education, to substantiate the content of the regional educational program of teachers’ professional development on this basis. The research methods are theoretical analysis, synthesis, modeling, systematization, generalization and survey. The results of the research are following: the essence of the possibilities of Kaizen technology in secondary education is revealed, the complex of approaches to the program content development is determined and its content is substantiated. There are three modules such as “The essence and origins of Kaizen technology”, “Lean-education”, “Management in education based on Kaizen technology”. Conclusions: Kaizen technology is a long-term strategy of personal development, based on the creativity of the teacher; mastery of Kaizen is carried out in three stages; the updated content of teacher advanced training is based on a set of scientific approaches; the criterion for the effectiveness of Kaizen technology and its purpose is the professional readiness of teachers for creative and constructive professional activity and continuous self-development.