Measuring elementary teachers’ understanding of the NGSS framework: An instrument for planning and assessing professional development

The arrival of the Next Generation Science Standards (NGSS) marks a new era in science education. However, like all education reform, the success of NGSS implementation lies with teachers. Effective and targeted professional development will play a key role in preparing teachers who work from the framework. This study sought to design and validate a survey instrument measuring elementary teachers’ perceptions of their understanding of the NGSS...