How Schools Kill Creativity

One of the components of primary/elementary education that I am really interested in is the creation of school curricula. How do we decide what our children should be taught? How do we define "success" within this curricula? Sir Ken Robinson's talk "How Schools Kill Creativity" has made me consider these questions more deeply. 

The main point that resonated with me was the rigidity of our school systems.  We pass on a one-size-fits-all curriculum in the subjects that societal standards deem the most important, and our success is measured by how well we can conform to this curriculum. There is not often a place for risk-taking in the traditional methods of teaching, and as Robinson says we "... become frightened of being wrong". 

What does this have to do with mathematics?

Of the people that I know that enjoy math, most of them say that it is because math results in "one correct answer".  How do we reconcile risk-taking in math (or any subject) with this belief? Can we do it? I don't have an answer for that.... yet.