The document describes a Clear Communication Index created by the CDC to standardize and improve health communication practices. It contains 4 questions and 20 scored items focused on communication best practices. It is intended to help communicators develop materials that are clear, follow plain language guidelines, and are informed by communication science. It also fosters discussion between subject matter experts and communicators. Survey results found that CDC staff felt the Index would help improve their communication processes and products by bringing them more in line with best practices.