🛠️ Invention or technique

Formalized sign language and public deaf education

Lengua de signos formalizada y educación pública de sordos

Date
c. 1760 (escuela 1771) · confidence medium
Place
Paris, France
Credited to
Charles-Michel de l'Épée
Field
Communication

⚠️ Disputed: the sources disagree.

What it is

The first free public school for deaf people, where l'Épée systematised the signs used by Paris's deaf community into 'methodical signs' to teach written French. It recognised sign language as a means of education rather than a deficiency.

L'Épée did not invent sign language, which Paris's deaf community already used; his achievement was its formalisation and public education. Samuel Heinicke founded the rival oralist school in Leipzig (1778).

What it led to

  • The National Institute for Deaf Youth (1791) and schools across Europe
  • American Sign Language (Gallaudet and Clerc, Hartford, 1817)
  • Deaf community and culture
  • The oralism-manualism debate (the Milan Congress, 1880)
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Built on

Made possible

  • American Sign Language (ASL)
  • Gallaudet University (1864)
  • Schools for the deaf worldwide

Links

Sources✓ verified 2026-09-25