Twenty-first century skills are quickly becoming taught and assessed in schools across the United States. Whether through explicit instruction or models like project-based learning, educators are realizing that lower-level content comprehension is not enough. The Whole Child Initiative calls for tenets that rely on these skills. Educators create a safe environment through collaboration. Critical thinking creates rigor and challenge. Communication can create engagement with the community. When we pair 21st century skills with content, we can create powerful and meaningful learning. The Common Core State Standards explicitly call for these skills, so through uncovering the 3 Cs in the Common Core standards, we can see how educators must teach and assess them.