The school was transferred from the 11th grade to the 9th grade without the consent of the parents

Our Kharkiv 11-year school was declared a 9-year school. This was reported by the director. There is no decision of the school board, nor is there a parent committee of the school. Is such a solution possible without parents and teachers? Is it the city department of education, or the district education department, or the school director? Who had the legal right to this decision, not including parents and teachers?