Full Breakdown
How the U.S. Supreme Court Decides Its Cases
6/29/2026, 1:22:02 AM
The Court’s Reactive Mandate
The United States Supreme Court acts only after parties file a writ of certiorari; the prevailing party may file an opposition brief and interest groups can submit amicus curiae briefs. Each term the Court receives about 4,000 petitions and grants review to fewer than 80, an acceptance rate near 2 %.
Step-by-Step Process
Law clerks first screen petitions and prepare memoranda for the justices’ private Friday conferences. Four justices must agree to grant certiorari, invoking the “rule of four.” After grant, petitioners and respondents submit detailed briefs; each case typically receives 16 amicus briefs, though *Obergefell v. Hodges* attracted 148. Oral arguments last about an hour, divided equally between parties, with justices questioning counsel. Following arguments, the justices meet again; the chief justice (or the senior justice in the majority) assigns the majority-opinion author. Draft opinions circulate for written feedback, and any justice may switch sides, generating concurring or dissenting opinions. Opinions are released from October through early July, with the majority author often summarizing the decision from the bench; dissenters sometimes read their opinions aloud.
Numbers That Define the Process
- Petitions per term: ~4,000
- Cases granted: <80 (?2 % acceptance)
- Average amicus briefs per case: 16; *Obergefell* received 148
- Oral argument length: ~60 minutes per side
- Rule of four requirement: 4 of 9 justices
Official Procedures and Opinion Assignment
If the chief justice is in the majority, they assign the majority-opinion author; otherwise the senior justice in the majority does. Drafts circulate for written feedback, and any justice may defect to the minority if unhappy. The process balances individual views with institutional coherence.
Dissent as Institutional Critique
Justice Sonia Sotomayor’s dissent in *Students for Fair Admissions v. Harvard College* argued that affirmative-action programs are constitutionally required to fulfill the Fourteenth Amendment’s guarantee of racial equality by mitigating lasting discrimination. Reading the dissent from the bench signaled deep disagreement within the Court and highlighted dissent as a vital form of internal criticism.
Verbatim Quotes
- “Here's how it all unfolds: The agenda-setting process The Supreme Court is a reactive institution.” — Paul M. Collins Jr., Professor, UMass Amherst
- “Here, the court employs a rule of four: It takes the votes of four out of the nine justices to agree to review a case.” — Paul M. Collins Jr.
- “The chief justice speaks first, followed by the rest of the court in order of seniority.” — Paul M. Collins Jr.
- “According to Sotomayor, affirmative action programs are constitutional because they help to achieve the 14th Amendment's guarantee of racial equality by mitigating the enduring effects of racial discrimination.” — Justice Sonia Sotomayor, Associate Justice, Supreme Court
