What are the barriers to innovative schools being implemented in public schools? (Grace Living Centers, Reggio Emilio Approach)
In his book, "The Element: How Finding Your Passion Changes Everything", Sir Ken Robinson mentions two types of schools. (He actually mentions many, but I want to focus on these two.)
First, he mentions the Grace Living Centers (http://southtier.com/tag/oklahoma/) where schools partner with an elderly home to leverage relationships between youth and elderly in education.
Second, he mentions the Reggio Emilio Approach (http://en.wikipedia.org/wiki/Reggio_Emilia_approach) which is inquiry-based approach. It involves families and views the teacher more as a guide and mentor.
I am interested in the pros and cons of these approaches. I am particularly interested in the cons. Why are these types of approaches not implemented in traditional public schools? What are the barriers, limitations, and objections to these types of innovative approaches?