The document introduces Pennsylvania's Standards Aligned System (SAS). It discusses how SAS was developed by educators across Pennsylvania to include Big Ideas, Concepts, and Competencies in core subjects. It explains the purpose of SAS is to support curriculum, instruction, assessment, and professional development using these common elements. It provides examples of Big Ideas in math and describes how Concepts and Competencies are defined in the SAS framework. Finally, it discusses how SAS is organized online and how it can connect to school district curriculum.