Please feel free to download a both revised 2016 edition of A Taxonomy of School Evolutionary Stages and the markedly updated 2016 version of the complementary work, Evolution within the Threads.
There is no cost.
The complementary publication, Evolution within the Threads is an in-depth elaboration of Chapter 4 of the Taxonomy, that explores in depth the evolution that has occurred within the pathfinders in 29 plus key operational areas.
As indicated in the book we are very happy to see the work used with appropriate citation by all associated with schools.
Following requests to secure a copy of the graphic (2.1) of the six evolutionary stages a copy of the jpeg is attached. As usual simply give due acknowledgement in its use.