What is the highest court in Illinois?

The Illinois Supreme Court is the highest court in the state of Illinois. It serves as the final arbiter of state law and has the authority to interpret the Illinois Constitution, as well as other state legislation. The court has original jurisdiction in certain cases, such as those involving revenue, mandamus, and quo warranto, and it has appellate jurisdiction over decisions from lower courts.

This differentiation is crucial; the Illinois Court of Appeals and the Circuit Court of Illinois serve as lower levels in the state judicial system, with the Circuit Court handling trial cases, while the Court of Appeals focuses on appeals from the Circuit Court decisions. The Federal District Court of Illinois operates at the federal level, dealing with federal law rather than state law, and therefore is not part of Illinois' state court hierarchy. The Illinois Supreme Court ultimately ensures the uniform interpretation and application of state laws across Illinois.