Often called the “highest court in the land,” the U.S. Supreme Court sits at the top of the American justice system. But despite its influence, the Court hears only a tiny fraction of the cases sent its way.
Each year, the Supreme Court receives around 10,000 petitions, yet it only agrees to hear about 70 to 80 cases. When the Court declines a case, the lower court’s ruling usually stands, making the Supreme Court the final word in many legal disputes.
So, what does the Supreme Court actually do, and why does it matter?
At its core, the Supreme Court’s role is to interpret the U.S. Constitution and ensure that federal and state laws align with it. Its decisions affect how laws are applied nationwide, shaping issues like voting rights, criminal sentencing, and the balance of power between state and federal governments.
In simple terms, the Supreme Court:
Because its rulings apply across the country, the Supreme Court plays a critical role in maintaining consistency within the justice system.
The Supreme Court sits at the top of a broader federal court system that includes two main levels below it: the U.S. District Courts and the U.S. Courts of Appeals.
District courts are trial-level courts where federal cases begin. There are 94 district courts across the country, where judges hear cases involving federal law, often with juries present.
Above the district courts are the U.S. Courts of Appeals, also known as circuit courts. These courts review district court decisions to determine whether the law was applied correctly.
Appellate courts don’t use juries. Rather, they employ panels of judges who evaluate legal arguments and issue rulings.
After a case moves through lower courts, a party may ask the Supreme Court to review it by filing a writ of certiorari. The Court is not required to accept these requests—and in fact, it accepts fewer than 1% of them.
The justices use the “rule of four” to decide which cases to hear. If at least four of the nine justices agree that a case is significant, the Court will review it.
Once the Supreme Court issues a decision, that ruling is typically final unless:
The Supreme Court’s responsibilities extend far beyond individual cases. Its rulings influence civil rights, federal authority, voting laws, business regulations, and many other aspects of daily life.
Because of this reach, understanding the role of the Supreme Court is essential for anyone interested in:
If you’re interested in how courts function—from trial courts to the Supreme Court—The University of Texas Permian Basin offers flexible online programs that explore the justice system in depth.
Programs include:
All programs are 100% online, allowing you to study on your schedule while gaining a strong foundation in law, courts, and public institutions.
Explore UT Permian Basin’s online programs to see how you can turn an interest in the justice system into a meaningful career.
Sources:
https://www.uscourts.gov/about-federal-courts/educational-resources/about-educational-outreach/activity-resources/supreme-1
https://www.uscourts.gov/about-federal-courts/court-role-and-structure
https://www.justice.gov/usao/justice-101/federal-courts
https://www.supremecourt.gov/about/constitutional.aspx
https://www.uscourts.gov/about-federal-courts/educational-resources/about-educational-outreach/activity-resources/about
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