There are a number of organizations and programs that language instructors can go to for information, support and professional development.

Indiana:

Indiana Chapter of the American Association of Teachers of German (AATG)
Association of Indiana Teachers of Japanese (AITJ)
Indiana Classical Conference (ICC)
The Indiana Chapter of the American Association of Teachers of Spanish and Portuguese (AATSP)
Northwest Indiana Chapter of Amercian Association of Teachers of French (AATF)

Midwest:

Central States Conference on the Teaching of Foreign Languages (CSC)

National:

American Association of Teachers of Arabic (AATA)
American Association of Teachers of French (AATF)
American Association of Teachers of German (AATG)
American Association of Teachers of Slavic and Eastern European Languages (AATSEEL)
American Association of Teachers of Spanish and Portuguese (AATSP)
American Classical League (ACL)
America Council of Teachers of Russian (ACTR)
American Council on the Teaching of Foreign Languages (ACTFL)
American Philological Association (APA)
Association of Teachers of Japanese (ATJ)
Computer Assisted Language Instruction Consortium (CALICO)
Goethe Institute
International Society for Technology in Education (ISTE)
Less Commonly Taught Languages (LCTL) Organizations
National Committee for Latin & Greek
National Council of Organizations of Less Commonly Taught Languages (NCOLCTL)
National Foreign Language Resource Centers (NFLRC)