"Until the release of the Common Core State Standards, many educators didn't realize that writing skills need to develop incrementally, with the work that students do at one grade level standing on the shoulders of prior learning. It would be hard to
achieve this high level of craft and knowledge if students weren't moving steadily along a spiralling curriculum, practicing and extending skills in each type of writing each year. After all, in math, teachers agree on content and ensure that students move up
the grade levels with the essential skills that teachers agreed upon. That same focus on writing as content, as a set of skills, will move grade levels of students forward, rather than individuals who happened to get this teacher or that. Writing will needto be given its due, starting in kindergarten and continuing throughout the grades."-LUCY CALKINS