Constitution Day and Citizenship Day

What is Constitution Day?

September 17 is recognized in the United States as Constitution Day and Citizenship Day. On this day, we commemorate the creation and signing of the supreme law of the land and celebrate the privileges and responsibilities of U.S. citizenship, be it for native-born or naturalized citizens.

Federal law requires that all schools receiving federal funds hold an educational program for their students on September 17 of each year.

Discover the Constitution Day Hub

Discover engaging, standards-aligned educational resources at the Constitution Day Hub, brought to you by trusted national organizations that offer high-quality, non-partisan, freely accessible civic education material.

Grades 4-8

Civics Inquiry:

Lesson Plans for the Classroom

From kindergarten to 12th grade, we have lesson plans on topics appropriate for Constitution Day. Younger students learn about the country's rules and what authority is, while older students dive deep into federalism, the amendments, and more.

The Framers of the Constitution

Fifty-five delegates were present at the Constitutional Convention, which was held in Philadelphia in the summer of 1787. Below is a selection of biographies of different Framers who helped shape America’s constitutional democracy all those years ago.

The Constitution EXPLAINED!

Learn about key aspects of the U.S. Constitution in everyday language. This series of 35 videos was created by the Center for Civic Education in partnership with iCivics and constitutional scholar Linda R. Monk, JD, to make our nation's founding document accessible to everyone.

About the Constitution

The Three Branches of Government

Other Articles of the Constitution

Amendments and Ratification

The Bill of Rights

Reconstruction Amendments

Other Amendments

The Constitution EXPLAINED was made possible by the generous support of Kenneth C. Griffin.

The Constitution Over Time

From its drafting through ratification to its various amendments, the U.S. Constitution has changed along with our understanding of it. Below are a few of the key milestones in that history.

September 17, 1787: The Constitution is signed in Philadelphia

December 7, 1787: Delaware is the first state to ratify the Constitution

June 21, 1788: Constitution is ratified by the required 9 of 13 states

March 4, 1789: The first Congress meets under the new Constitution

September 25, 1789: Congress sends twelve amendments to the states for ratification

May 29, 1790: Rhode Island ratifies the Constitution, the last state to do so

December 15, 1791: Bill of Rights is adopted with Virginia’s ratification

September 17, 1787: The Constitution is signed in Philadelphia • December 7, 1787: Delaware is the first state to ratify the Constitution • June 21, 1788: Constitution is ratified by the required 9 of 13 states • March 4, 1789: The first Congress meets under the new Constitution • September 25, 1789: Congress sends twelve amendments to the states for ratification • May 29, 1790: Rhode Island ratifies the Constitution, the last state to do so • December 15, 1791: Bill of Rights is adopted with Virginia’s ratification •