The book "Changing Schools" by Marianne Ullmann offers an in-depth analysis of the challenges associated with the implementation of educational innovations in the school system. The author examines this issue from the perspective of Educational Governance and Actor-Network Theory. She argues that the planning and evaluation of innovation projects should not only focus on control and predictability but also require openness to unexpected developments. Through this approach, Ullmann makes a valuable contribution to the advancement of 'Good Governance' in the context of school reform projects. The book is aimed at professionals in the education sector who are involved in the implementation and evaluation of reforms.