Philadelphia, Pa. (January 31, 2017) – The Common Core and other college- and career-readiness standards have dominated education policy debates for almost a decade. But less attention is paid to how those standards are put into practice. The Center on Standards, Alignment, Instruction, and Learning (C-SAIL) is releasing the first detailed picture of implementation in four states: Kentucky, Massachusetts, Ohio, and Texas. These reports track states taking different approaches to standard reform, and begin to identify successes and challenges from which other states can learn.