This short report discusses the overall shape of curriculum change as experienced by the schools we tracked over a period of several years as part of the Curriculum Implementation Exploratory Studies (CIES) project. Some interesting change dynamics appear over this longer time frame. We would not have found these dynamics if we had stopped at the end of the first round of CIES, at which point we had visited some “early adopter” schools twice in a period of 18 months or so.