This document summarizes a teacher's professional inquiry on using co-constructed success criteria to improve reading abilities in students. The teacher gathered baseline student data, shared assessments with students to set group goals, taught reading objectives while having students help construct success criteria, administered summative assessments and had students reflect on their learning. Results showed students were better able to discuss reading skills and how success criteria helped rather than just story context. Next steps include introducing reciprocal reading and having students set learning goals from reading progressions.