The Pennsylvania Standards Aligned System (SAS) is a collaborative product of research and good practice that identifies six distinct elements which, if utilized together, will provide schools and districts a common framework for continuous school and district enhancement and improvement. Much research has been conducted regarding what makes a great school. There are many intangible components; however, research supports the notion that great schools and school systems tend to have six common elements that ensure Student Achievement: Standards, Assessment, Curriculum Framework, Instruction, Materials & Resources, and Safe and Supportive Schools.