Since Time Immemorial

In 2015, the Legislature passed Senate Bill 5433 modifying the original 2005 legislation, now requiring the Since Time Immemorial: Tribal Sovereignty in Washington State or other tribally-developed curriculum be taught in all schools. The use of the Since Time Immemorial curriculum has been endorsed by all 29 federally recognized tribes.

Since Time Immemorial: Tribal Sovereignty in Washington State