Required Supreme Court Cases for AP Government

The Big Picture (What “Required Cases” Means)

The required Supreme Court cases are a fixed set from the AP U.S. Government and Politics Course and Exam Description (CED). You’re expected to know each case’s:

Constitutional principle (which clause/amendment is being interpreted)
Holding (what the Court decided)
Reasoning/standard (why; any test like “clear and present danger”)
Impact (how it changed government power, rights, elections, or policy)

Why it matters: these cases are the easiest way for the exam to test foundational concepts (judicial review, federalism, civil liberties, civil rights, elections) in MCQs and especially FRQs.

Critical reminder: Your job isn’t to retell facts of the story. Your job is to connect a scenario to the right constitutional rule + case holding.

What You Need to Know

Core definition

A “required case” is a Supreme Court decision that the AP course treats as a must-know precedent for understanding how the Constitution is applied.

What you’re actually tested on

You should be able to do all of the following quickly:

Match a situation to the correct case (recognition)
Name the constitutional hook (Commerce Clause, Establishment Clause, Equal Protection, Due Process, etc.)
State the holding in one sentence
Apply it to a new scenario (same principle, different facts)

The 5 big buckets the required cases cover

Judicial power (judicial review)
Federalism (national vs. state power)
First Amendment (speech, press, religion, student rights)
Due process / rights of the accused (incorporation, criminal procedure)
Elections + civil rights (redistricting, campaign finance, affirmative action)

Step-by-Step Breakdown (How to Use Cases on FRQs)

Use this every time you see a scenario FRQ, argumentative evidence, or a required-case prompt.

Spot the issue area first
- Speech/press/religion → likely First Amendment cases
- Police interrogation/counsel → Gideon/Miranda
- Federal law vs. state law → McCulloch/Lopez
- District maps/elections → Baker/Shaw
- Money in elections → Citizens United
- Race in admissions → Bakke
Identify the government action being challenged
- Is the government restricting speech? (Schenck, Tinker)
- Censoring publication before it happens? (NYT v. U.S.)
- Promoting religion in schools? (Engel)
- Burdening religious practice? (Yoder)
- Denying counsel or coercing statements? (Gideon, Miranda)
- Regulating beyond its enumerated powers? (Lopez)
Name the constitutional provision (one phrase is enough)
Examples:
- “First Amendment: free speech”
- “First Amendment: establishment clause”
- “Fourteenth Amendment: equal protection”
- “Fourteenth Amendment: due process (privacy / incorporation)”
- “Article III judicial review”
- “Necessary and Proper Clause + Supremacy Clause”
- “Commerce Clause limits”
State the required case holding in one clean sentence
Keep it simple and test-ready.
Apply: analogize the scenario to the holding
Use a because sentence:
- “This is constitutional/unconstitutional because … (standard/test) … and like in (case), the Court held …”

Mini worked application (model)

Scenario: A public school suspends students for wearing armbands protesting a war, even though there’s no disruption.

Issue: student speech
Provision: First Amendment
Case: Tinker v. Des Moines
Holding: schools can’t restrict student expression unless it causes substantial disruption
Apply: suspension likely unconstitutional because peaceful armbands do not disrupt learning.

Key Formulas, Rules & Facts (The 15 Required Cases)

Master table (know these cold)

Required case (year)	Constitutional hook	High-yield holding (what the Court said)	What it’s usually testing
Marbury v. Madison (1803)	Article III; separation of powers	Established judicial review: Court can strike laws that violate the Constitution.	“Who decides what the Constitution means?”
McCulloch v. Maryland (1819)	Necessary and Proper Clause; Supremacy Clause	Congress has implied powers; states can’t tax or block valid federal actions.	National power beats state interference
United States v. Lopez (1995)	Commerce Clause; federalism	Congress can’t use Commerce Clause to regulate non-economic activity too remotely related to interstate commerce (Gun-Free School Zones Act struck).	Limits on congressional power
Engel v. Vitale (1962)	First Amendment Establishment Clause	School-sponsored prayer in public schools is unconstitutional (even if “non-denominational” and voluntary).	Establishment clause basics
Wisconsin v. Yoder (1972)	First Amendment Free Exercise Clause	States can’t force Amish families to follow compulsory schooling past a point when it substantially burdens religious practice without sufficient justification.	Free exercise vs. state interests
Tinker v. Des Moines (1969)	First Amendment speech (students)	Student speech is protected unless it causes substantial disruption or infringes on others’ rights.	Student expression standard
New York Times v. United States (1971)	First Amendment press; prior restraint	Prior restraint (stopping publication ahead of time) is presumptively unconstitutional; heavy burden on government.	Press freedom; censorship
Schenck v. United States (1919)	First Amendment speech limits	Speech can be restricted when it poses a clear and present danger (wartime context; upheld conviction).	When speech is not protected
Gideon v. Wainwright (1963)	Sixth Amendment counsel; 14th incorporation	States must provide an attorney to indigent defendants in serious criminal (felony) cases.	Right to counsel; incorporation
Miranda v. Arizona (1966)	Fifth Amendment self-incrimination; Sixth counsel	Police must inform suspects of rights before custodial interrogation; otherwise statements may be excluded.	Criminal procedure; due process
Roe v. Wade (1973)	14th Amendment Due Process (privacy)	Recognized a constitutional right to privacy encompassing abortion decisions (with a framework balancing state interests).	Substantive due process/privacy
Baker v. Carr (1962)	14th Amendment Equal Protection; justiciability	Redistricting challenges are justiciable (not automatically “political questions”); opened door to “one person, one vote” line of cases.	Courts can hear apportionment cases
Shaw v. Reno (1993)	14th Amendment Equal Protection	Racial gerrymanders with bizarre shapes can violate equal protection; subject to strict scrutiny.	Limits on race-based districting
Citizens United v. FEC (2010)	First Amendment (political speech)	Government can’t ban independent political expenditures by corporations/unions; spending is protected political speech.	Money, speech, elections
Regents of the Univ. of California v. Bakke (1978)	Equal Protection; Title VI	Quotas based on race are unconstitutional, but race can be one factor in admissions to pursue diversity.	Affirmative action framework

Extra exam-useful clarifiers (short but important)

Marbury is about the Court’s power over laws, not about the president being “above” the Court.
McCulloch supports a broad reading of federal power using implied powers.
Lopez is a modern example of the Court enforcing federalism limits.
Schenck vs. NYT v. U.S.: both about First Amendment, but Schenck allows restriction based on danger; NYT is about prior restraint (stopping publication before it happens).
Tinker is the default for student speech: schools need disruption, not just dislike.
Engel is establishment (government endorsing religion), Yoder is free exercise (government burdening religion).
Gideon (lawyer for felony defendants) and Miranda (warnings during custodial interrogation) are different protections.
Roe: historically central, but note legal status update below.

Roe v. Wade status note: In Dobbs v. Jackson Women’s Health Organization (2022), the Court overturned Roe. AP may still use Roe to test substantive due process/privacy reasoning and historical precedent, but you should not claim Roe is currently controlling law.

Examples & Applications (How They Show Up)

Example 1: Federalism / national power

Prompt idea: A state imposes a special tax on a federal agency operating inside the state.

Best case: McCulloch v. Maryland
Key insight: states can’t use taxation/regulation to impede valid federal actions; federal law is supreme.

Example 2: Commerce Clause limit

Prompt idea: Congress bans possession of a gun near schools claiming it affects the economy.

Best case: United States v. Lopez
Key insight: non-economic, local activity with an indirect connection is beyond Commerce power (per Lopez).

Example 3: Religion in public schools

Prompt idea: A public school begins the day with a short “non-denominational” prayer written by officials.

Best case: Engel v. Vitale
Key insight: government-written/sponsored prayer in public schools violates Establishment Clause even if participation is optional.

Example 4: Criminal procedure

Prompt idea: Police interrogate a suspect in custody for hours without warnings; suspect confesses.

Best case: Miranda v. Arizona
Key insight: custodial interrogation triggers Miranda warnings; statements may be excluded if warnings not given.

Common Mistakes & Traps

Mixing up Establishment vs. Free Exercise
- Wrong: using Engel to argue “my religion should get an exemption.”
- Fix: Engel = government endorsing religion; Yoder = government burdening religious practice.
Confusing “speech restriction” with “prior restraint”
- Wrong: citing NYT v. U.S. for punishing speech after the fact.
- Fix: NYT v. U.S. is specifically about stopping publication before it happens.
Using Tinker for adult speech
- Wrong: applying Tinker outside schools.
- Fix: Tinker is a student speech in school standard (substantial disruption).
Saying Citizens United allows unlimited campaign contributions
- Wrong: “Corporations can donate unlimited money directly to candidates.”
- Fix: Citizens United protects independent expenditures (spending not coordinated with candidates). Contributions are treated differently.
Overstating Gideon
- Wrong: “Gideon guarantees a lawyer in every legal situation.”
- Fix: Gideon is about the right to counsel for serious criminal cases (classically felony) in state courts via incorporation.
Forgetting the ‘custody + interrogation’ trigger for Miranda
- Wrong: thinking Miranda applies to every police interaction.
- Fix: Miranda is for custodial interrogation (not casual, non-custodial questioning).
Mislabeling Baker v. Carr as the “one person, one vote” holding
- Wrong: claiming Baker itself created the “one person, one vote” rule.
- Fix: Baker made apportionment justiciable under Equal Protection; later cases refined the exact population-equality requirements.
Treating Roe as current controlling precedent with no caveat
- Wrong: “Roe is still the law, so abortion is constitutionally protected nationwide.”
- Fix: know Roe’s reasoning/role in substantive due process, but acknowledge it was overturned by Dobbs (2022).

Memory Aids & Quick Tricks

Trick / mnemonic	What it helps you remember	When to use it
“M&M = Marbury makes (judicial review)”	Marbury v. Madison establishes judicial review	Any separation of powers / Court power question
“McC = More Congress”	McCulloch expands federal power via implied powers	Federal vs. state conflict; Necessary and Proper
“Lopez = Limits”	Lopez limits Commerce Clause reach	When Congress regulates local, non-economic activity
“Engel = prayer ends”	Engel ends school-sponsored prayer	Establishment Clause in public schools
“Yoder = Yodeling Amish leave school”	Amish free exercise exemption from compulsory schooling	Free Exercise vs. state law
“Tinker = armbands”	Student symbolic speech protected absent disruption	Student speech questions
“NYT = No You can’t pre-Stop The press”	NYT v. U.S. makes prior restraint very hard	Censorship / Pentagon Papers style prompts
“Schenck = ‘shouting fire’ danger”	Clear and present danger limits speech	Speech limits, wartime/security contexts
“Gideon = get a defender”	Right to counsel for indigent defendants	Criminal defendant rights
“Miranda = must read rights”	Warnings required for custodial interrogation	Confessions/interrogations
“Baker = Bake the map in court”	Courts can hear redistricting cases	Justiciability, political question doctrine
“Shaw = shape shows race”	Weirdly shaped racial gerrymanders trigger strict scrutiny	Equal protection + district lines
“Citizens United = spending is speech”	Independent expenditures protected	Campaign finance/free speech
“Bakke = ban quotas, keep ‘a factor’”	No racial quotas; race can be one factor for diversity	Affirmative action admissions

Quick Review Checklist

You can name all 15 required cases and put each in the right bucket (judicial power, federalism, 1A, due process, elections/civil rights).
For each case, you can state the holding in one sentence (no extra story details).
You can match each case to its constitutional hook (amendment/clause).
You can distinguish the easy confusions:
- Engel (establishment) vs. Yoder (free exercise)
- Schenck (danger-based restriction) vs. NYT (prior restraint)
- Gideon (counsel) vs. Miranda (warnings)
- Baker (justiciable apportionment) vs. Shaw (racial gerrymander scrutiny)
- Citizens United (independent spending) vs. contributions limits
You remember the Roe caveat: understand its reasoning, but it was overturned by Dobbs.

One clean case reference with the right constitutional link can earn major points—keep it simple and precise.