This open access book addresses the evasive problem of why truly effective educational
innovation on a wide scale is so difficult to achieve and what leaders may do about this.
Examining the case of system-wide reform processes centering on teaching a thinking-rich
curriculum it discusses general issues pertaining to implementing deep large-scale changes in
the core of learning and instruction. The book emphasizes challenges related to professional
development assessment achievement gaps and the tension between knowledge and skills in 21st
century curricula. It summarizes insights the author has gained from approximately 25 years of
engaging with these topics both as an academic and as a practitioner who led a national change
process. With a Forward by David Perkins