The court structure in a legal system typically consists of multiple levels, each serving a specific function. At the base are trial courts, where cases are initially heard and decided. These courts handle various matters, including civil disputes and criminal cases, and often feature a judge and sometimes a jury. Above the trial courts are appellate courts, which review decisions made by lower courts. If a party believes a trial court made an error, they can appeal to an appellate court. The highest level is usually the supreme court, which has the final say on legal interpretations and can set important precedents.