In 2015-16 my school implemented a Mastery Based Learning (MBL) program for all freshman. I had previously seen the data from the pilot schools within the district and was looking forward to the paradigm shift. Our MBL model uses a software package to measure student growth, one-to-one chromebooks, and intensive teacher interaction. Teachers work with students on topics they are ready to learn, not topics that the teacher has predetermined must be taught on any specific day. The one section of the textbook for all students is no longer part of MBL classrooms. Small group instruction, stations, independent work, and peer tutoring have replaced the whole group, all learning the same topic at the same time classroom.