SBE establishes state requirements for high school graduation. The legislature also establishes requirements, as do local districts, private schools, and tribal schools. Only after students meet all of the designated state and local requirements do they earn a diploma.
The 2006 legislature asked SBE to revise the purpose of a diploma. The new purpose was adopted by SBE in January 2008, and is reflected in basic education RCW 28A.150.220.