In it, Sandra Stotsky explains in detail, looking at individual standards at a time, exactly how confusing the teaching and learning process becomes, as outlined by common core writing standards. She shows that concepts are expected to be used in essays to be written by sixth graders, for example, but the concepts were never previously introduced or taught.
This is forcing teachers to invent worksheets and writing samples to quickly scaffold students to the missing concepts without having allotted space and time to do so. It also leaves the slower learners at a disadvantage.
Additionally, Stotsky makes the point that there is no way for the flaws in common core to be altered by a vote or by a locality. Neither those flaws which are now known nor those yet to be discovered can be changed except by the central planners who copyrighted the standards: the NGA/CCSSO (National Governors’ Association and Council of Chief State School Officers). —Who are not, by the way, teachers.