(1) "High school" means a public school in the state enrolling students in any of grades nine through twelve.

(2) "Graduation rate" means the four-year adjusted cohort graduation rate expressed as the percentage of students who receive a regular high school diploma within four academic years of having enrolled for the first time as ninth grade students. Students who transfer to another school less than four academic years after initial enrollment in the ninth grade shall not be included in the calculation of the graduation rate for the school from which the student transfers. Students who become deceased shall not be included in the calculation of the graduation rate for the school last attended. Students who earn a regular high school diploma after their four academic years will be included in additional calculations and reports for the year a regular high school diploma is completed.

(3) "Performance improvement goals" means the long-term goals described in the Washington accountability plan approved by the U.S. Department of Education for the academic achievement indicator, high school graduation indicator, and English learner progress indicator.

(4) "School and school district improvement plans" means the data-driven plan for the district and each school described and required under WAC 180-16-220 that promotes a positive impact on student learning and includes a continuous improvement process.

(5) "Federal requirements" means the accountability and other requirements specified by the U.S. Department of Education in the Elementary and Secondary Education Act of 1965, as amended.

(6) "Washington school improvement framework" or "WSIF" means the system of school differentiation described in the Washington accountability plan approved by the U.S. Department of Education as meeting federal requirements. The framework methodology establishes a summative score for the all students group and the reportable student groups specified in WAC 180-105-020(2) from up to five indicators broadly categorized as academic achievement, student academic growth, English learner progress, high school graduation, and school quality or student success.

(7) "Washington school improvement framework indicators" includes the following indicators:

(a) "Academic achievement indicator" means the measure of the percentage of students who are proficient on the required state assessments in reading/English language arts and mathematics included as part of the system of differentiation described in the Washington accountability plan approved by the U.S. Department of Education.

(b) "Student growth indicator" means a measure of academic growth or academic improvement derived from the required state assessments included as part of the system of differentiation described in the Washington accountability plan approved by the U.S. Department of Education.

(c) "High school graduation indicator" means the graduation rate and adjustments if any included as part of the system of differentiation described in the Washington accountability plan approved by the U.S. Department of Education. This indicator only applies to high schools as defined in subsection (3) of this section.

(d) "English learner progress indicator" means a measure of the progress in achieving English language proficiency for English learners included as part of the system of differentiation as described in the Washington accountability plan approved by the U.S. Department of Education.

(e) "School quality or student success indicator" means the measure or combination of measures of student engagement and school climate included as part of the system of differentiation described in the Washington accountability plan approved by the U.S. Department of Education.

(i) "Regular school attendance" is a measure of school quality or student success in the Washington school improvement framework. The measure is the percentage of students at a school who had fewer than eighteen full-day absences (ten percent) during the school year.

(ii) "9th graders on track" is a measure of school quality or student success in the Washington school improvement framework. The measure is the percentage of first-time ninth graders at a school who pass all the credits attempted. This indicator only applies to high schools as defined in subsection (3) of this section.

(iii) "Advanced course-taking" is a measure of school quality or student success in the Washington school improvement framework. The measure is the percentage of all enrolled students (grades nine through twelve) who complete a dual credit course. This indicator only applies to high schools as defined in subsection (3) of this section.