Where can I learn more about FBAs and BIPs?

Washington State Special Education Rules (the WACs):

https://apps.leg.wa.gov/WAC/default.aspx?cite=392-172A&full=true

OSPI (Office of Superintendent of Public Instruction):

Guidance for Families re Behavior and Discipline:

https://ospi.k12.wa.us/student-success/special-education/family-engagement-and-guidance/behavior-and-discipline

Model State Forms for Special Education, including FBAs and BIPs:

https://ospi.k12.wa.us/student-success/special-education/program-improvement/model-forms-services-students-special-education