NGSS Evidence Statements


The NGSS Evidence Statements for elementary grades (K-5), middle school grades (6-8) and high school are now available. These statements were developed and reviewed by educators and scientists, including many members of the Next Generation Science Standards (NGSS) writing team. The evidence statements are intended to identify clear, measurable components that, if met, fully satisfy each performance expectation (PE) described within the NGSS. 

Given that each PE is three-dimensional, the statements describe how students can use the practices, crosscutting concepts, and disciplinary core ideas together to demonstrate proficiency on the PEs by the end of instruction. These evidence statements were written to allow for multiple methods and contexts of performance, including assessing students' performance on multiple related PEs at the same time. 

For more information, see the Introduction and Overview, which applies to the evidence statements for all grade levels. Additional materials, including appendices for K-2, 3-5, and middle school are coming soon.