Basic education certificated instructional staff — Definition — Ratio to students.
RCW 28A.150.100
in effect(1) For the purposes of this section and RCW 28A.150.410 and 28A.400.200 , "basic education certificated instructional staff" means all full-time equivalent classroom teachers, teacher-librarians, counselors, certificated student health services staff, and other certificated instructional staff in the following programs as defined for statewide school district accounting purposes: Basic education, secondary vocational education, general instructional support, and general supportive services. (2) Each school district shall maintain a ratio of at least 46 basic education certificated instructional staff to 1,000 annual average full-time equivalent students. This requirement does not apply to that portion of a district's annual average full-time equivalent enrollment that is enrolled in alternative learning experience courses as defined in RCW 28A.232.010 .
(1) For the purposes of this section and RCW 28A.150.410 and 28A.400.200 , "basic education certificated instructional staff" means all full-time equivalent classroom teachers, teacher-librarians, counselors, certificated student health services staff, and other certificated instructional staff in the following programs as defined for statewide school district accounting purposes: Basic education, secondary vocational education, general instructional support, and general supportive services.
(2) Each school district shall maintain a ratio of at least 46 basic education certificated instructional staff to 1,000 annual average full-time equivalent students. This requirement does not apply to that portion of a district's annual average full-time equivalent enrollment that is enrolled in alternative learning experience courses as defined in RCW 28A.232.010 .
Source: WA Statutes (Official Site)URL: https://app.leg.wa.gov/RCW/default.aspx?cite=28A.150&full=trueFetched: 6/29/2026