A case can reach the Supreme Court through a process called petition for writ of certiorari. This means that a party to a case must request that the Supreme Court review a decision made by a lower court. Once a case is up for review, the Supreme Court justices will evaluate the legal issues involved and hear arguments from both sides. They will then make a decision on the case and issue an opinion explaining their reasoning. The Supreme Court's decision is final and cannot be appealed to a higher court. The Court may choose to affirm the lower court's decision, reverse it, or send it back to the lower court for further review. The Court's decision can have significant legal implications and can impact future cases.