Long before the advent of education technology, many educators, particularly at the elementary school level, rotated students among "learning centers"-- self-contained sections of a classroom where students could engage in various independent learning activities. Part classroom management tool and part pedagogical strategy, learning centers presented an opportunity for teachers to help motivate students who struggled in a whole-group setting, as well as to provide students different representations of the educational material. An early form of blended learning--online learning in a school setting--emerged when teachers adapted these centers to include technology. This led teachers to replace an existing learning center or add a new one with internet-enabled devices that could deliver online content such as practice drills or adaptive tutoring. The Christensen Institute first defined this blended phenomenon in 2012 as the Station Rotation model of blended learning. The Station Rotation differs from other rotational models of blended learning: it includes fixed schedules in which all students rotate to all learning stations. Often times, a Station Rotation classroom is set up with a timer; at the sound of the alarm, students rotate to the next station. Classrooms may have two, three, or more learning stations, but regardless of how many stations there are, all students rotate through every station within a fixed class period. When implemented well, the Station Rotation model has helped thousands of students see a marked increase in academic achievement. This report provides an in-depth look at how and why seven educators in two districts are fortifying, iterating on, and, in some cases, moving away from the Station Rotation model. A detailed look at the changes that these district teachers have made over time to their Station Rotation programs is provided. The hope is that these case studies will shed light on innovative practices that may help others looking to expand or refine future iterations of the Station Rotation model in their own schools.