National Deaf History Month is celebrated from March 13 through April 15 to commemorate the achievements of people who are deaf and hard of hearing. The time frame is spread across March and April in recognition of three turning points in deaf education history dating back to the early 1800s.
- March 13, 1988: The Deaf President Now movement succeeds in having I. King Jordan named the first deaf president of Gallaudet University.
- April 8, 1864: President Abraham Lincoln signs the charter for Gallaudet University in Washington, the first school for the advanced education of the Deaf and hard-of-hearing in the world.
- April 15, 1817: The first permanent public school for the deaf, the American School for the Deaf in Hartford, Connecticut, opens.