Many schools in my area are demanding more uniform instruction as the pressure to meet state-mandated standards increases. It's just easier for administrators that way, and let's face it, the tail often wags the dog when it comes to curriculum and instruction. Fortunately, I've always taught at small schools, including a charter school, and often was the only teacher who taught my courses. So it never really affected me, though I know many others who frankly are having their wings clipped by an emphasis on standardization. I will say that collaboration, which is a different kettle of fish altogether, is not only wonderful, but essential to good teaching. And I understand the need to standardize content, even if I don't agree with it. But there has to be room for teachers to bring their own expertise and experience into the classroom, and many lessons and teaching styles just don't work well with some personalities.