This document discusses implementing the Common Core State Standards for Mathematics (CCSS-M). It begins by asking questions about how different parts of the mathematics education system are responding to the introduction of the CCSS-M, including states, schools, teacher education programs, and professional development. It then discusses distinguishing between alignment of curriculum and assessments with the standards and ensuring high quality. The rest of the document focuses on one school district's approach to transitioning to the CCSS-M, covering their work on developing curriculum, instruction, professional development, assessment, and engaging parents and the community.