REL Midwest’s ENgagement and Achievement through Computational Thinking (ENACT) partnership released the Computational Thinking–Pedagogical Content Knowledge (CT–PCK) Survey, a new tool to help understand teachers’ knowledge. REL Midwest developed and tested the CT–PCK Survey to help districts, schools, and teachers identify current levels of knowledge related to using computational thinking in middle school math instruction, continued areas for learning, and opportunities for professional development. This user guide resource includes steps for survey administration, recommendations for analysis and interpretation, the survey text, and a survey answer key.