Assessment Design Tool: Designing Evidence-Centered Assessment Items is a classroom-ready planning tool that helps South Carolina U.S. History teachers create adapt, evaluate, and revise evidence-centered assessment items aligned to historical thinking, Depth of Knowledge (DOK), Performance Level Descriptors (PLDs), and EOCEP expectations. Designed for individual planning, instructional coaching, or professional learning communities, this reusable resource supports coherent assessment design that measures historical reasoning and promotes rigorous, evidence-centered classroom instruction.