The Common Core also emphasizes formative assessment data. Summative data is essential for providing programatic feedback and acheivement data within schools, across districts and even states. However, well written formative assessments still provide the classroom teacher with indepth, reliable, timely and instructionally actionable information to inform instruction. Teachers.... still the NUMBER ONE variable impacting student achievement. Creating exemplary formative assessments and using the data quickly and smartly will contribute to student success on PARCC.