Pawnee is a Caddoan language, mainly and traditionally spoken by Pawnee Native Americans, who now inhabit in North-central Oklahoma. Unfortunately, Pawnee is an extinct language as only 10 native speakers are found in a 2007 study. And the ethnical group of Pawnee people is also as small as the level of 2500.
IU's AISRI (American Indian Research Institute) have worked for over a decade to develop language curricula and other materials, including Pawnee Language Program that can support language instruction programs in elementary and secondary schools as well as in community colleges. They are "developing materials in both printed and computer formats for teaching Pawnee in the local high school and in adult education classes."