Children who play with piles of Legos, inventing and building as they wish, exhibit far more long-term creativity than children who build things from Lego kits. Rearranging Legos from a messy pile is a better learning experience than working from a kit with directions (unless you're in a hurry and hope to use the finished Lego product as a household appliance).
In 2015 it moved from the political margins and emerged as a full-scale social movement committed to the idea that education should be about children, not testing. States have not yet abandoned Common Core and Race to the Top mandated high-stakes testing, but as the Opt-Out movement continues to grow and its pace of growth continues to accelerate, I believe they will.
My advice to teachers and school administrators this fall is to ignore the unit sequence in the Common Core aligned ELA curriculum. If someone complains, explain that you think it is more important that the ELA and social studies curriculum be coordinated so they make sense and support student learning.