Multiple outlets publish rankings of U.S. states by high school graduation rates. The measures used in these rankings assess the share of students who graduate from high school within four years. The reported graduation rates vary across states, with some jurisdictions showing lower levels of on-time graduation and others reporting higher levels. The rankings present states from the lowest graduation rates to the highest, allowing readers to compare performance side by side. The articles note that the graduation rate metric is intended to reflect students’ on-time completion of high school, rather than long-term completion over extended timelines. While the sources do not offer a single shared explanation for why particular states rank where they do, the overall presentation focuses on cross-state differences in outcomes based on the same general four-year graduation-rate concept. Readers can use the list to identify which states have the lowest and highest reported on-time graduation rates and to see how the distribution of rates changes from one state to another.