Courts of appeal are higher-level courts that review decisions made by lower courts, such as trial courts. Their main role is to ensure that the law was applied correctly and that legal procedures were followed. If a party believes a trial court made a mistake, they can appeal the decision to a court of appeal. These courts do not conduct new trials or hear new evidence; instead, they examine the records from the original case. The judges in courts of appeal issue rulings that can uphold, reverse, or modify the lower court's decision, impacting the outcome for the involved parties.