Enrollment
1,650
Washington · 2024-25 NCES data
High school (grades 9-12) · Arlington, WA
Arlington High School
Federal NCES profile for Arlington High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 56/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 530024000023
👥 S:T ratio 16
📚 AP courses 100
🌟 Gifted program 70
🎓 Counselors 34
📋 Attendance 57
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Arlington High School earns 56/100 on the Resource Investment Index, with class sizes larger than 83% of Washington schools. It is also one of the largest schools in Washington.
- #2 of 4
- high schools in Arlington · Resource Index
- 56
- Resource Index · Higher
- 20.9:1
- large classes for Washington
- 28.9%
- free-lunch eligible
Arlington High School has class sizes larger than 83% of Washington schools. Computed live against every Washington school reporting to NCES.
By Resource Investment Index, Arlington High School ranks #2 of 4 high schools in Arlington, WA.
School address
District: Arlington School District · Washington
NCES ID 530024000023 Verify on NCES CCD record →
Teachers (FTE)
79.0
Federal CCD staff survey
Students per teacher
20.9:1
vs 17.6:1 Washington avg
+19% vs state
Free-lunch eligible
28.9%
vs 45.0% Washington avg
-36% vs state
Student-teacher ratio in context
How Arlington High School compares with Washington and U.S. medians
What stands out at Arlington High School
Arlington High School is a large high school in Arlington, Washington, enrolling 1,650 students.
Class loads run somewhat heavier than typical: 20.9:1 puts it in the larger third of Washington schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 28.9% of students eligible for free meals.
By headcount it is one of the larger campuses in Washington, bigger than 98% of state schools at 1,650 students.
Its Resource Investment Index sits near the middle of the pack among 2,394 scored Washington schools.
Against 87 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #30.
Its student body is led by White (67%) and Hispanic or Latino (20%) (diversity index 50/100).
On the academic-pipeline side it reports 26 Advanced Placement courses.
Counselor availability sits well past the ASCA benchmark, roughly 330 students sharing each counselor, though short of the most stretched campuses.
17.0% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
The federal civil-rights collection also records 26 expulsions at this campus for 2021-22.
Among Arlington's high schools, it stands alongside Lakewood High School (834 students): Arlington High School is larger than that campus by headcount and runs leaner classes (20.9:1 vs 25.3:1).
Arlington School District also operates Eagle Creek Elementary (665 students) and Post Middle School (645 students) alongside Arlington High School.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Arlington High School compares
Arlington High School on the metrics families compare, against Washington and U.S. means.
| Metric | This school | vs Washington | Washington avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 20.9:1 | ▲ 19% | 17.6:1 | 15.7:1 |
| Free-lunch eligible | 28.9% | ▼ 36% | 45.0% | 51.7% |
| Enrollment | 1,650 | top 2% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
20.9:1
Leaner classes than 13% of US schools, heavier class loads than most.
1,650
Bigger than 97% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
28.9%
free-lunch eligible
- 36% below the Washington average of 45.0%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
20.9:1
students per teacher
- 19% above state mean
Top 83% in Washington - lower ratio than 17% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
17.0%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$16,661
per pupil, district-wide
- below Washington avg of $19,487
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors5.0 FTE
Per 330 students, the combined health-and-guidance staffing load for this school.
Discipline context
70
in-school suspensions + 27 out-of-school
Suspension rate: 4.2 per 100 students. Combined in-school and out-of-school rate: 5.9 per 100 students. Reported via the Civil Rights Data Collection. Includes 26 expulsions.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 67.4%
Hispanic or Latino 19.9%
Two or More 7.8%
Asian 1.9%
African American 1.6%
American Indian / Alaska Native 1.0%
Native Hawaiian / Pacific Islander 0.4%
Largest group: White at 67.4% of enrollment.
Student-body diversity index 49.9/100
Simpson diversity index - at 49.9, Arlington High School is less mixed than the Washington school average of 53.3.
Programs
AP courses offered 26
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Arlington School District, which includes Arlington High School.
$16,661
Per student
-15%
vs Washington
Avg $19,487
+0%
vs U.S.
Avg $16,593
Revenue mix
Local 18.2%
State 68.7%
Federal 13.1%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Arlington High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Eagle Creek Elementary | Smaller | Similar economic need | Lower S:T ratio |
| Post Middle School | Smaller | Similar economic need | Similar S:T ratio |
| Kent Prairie Elementary | Smaller | Similar economic need | Lower S:T ratio |
| Presidents Elementary | Smaller | Similar economic need | Lower S:T ratio |
| Haller Middle School | Smaller | Similar economic need | Similar S:T ratio |
Comparisons are relative to Arlington High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 665
- Students per teacher
- 15.8:1
- Resource Index
- 33/100
- Enrollment
- 645
- Students per teacher
- 20.2:1
- Resource Index
- 40/100
- Enrollment
- 621
- Students per teacher
- 15.5:1
- Resource Index
- 32/100
- Enrollment
- 578
- Students per teacher
- 16.1:1
- Resource Index
- 33/100
- Enrollment
- 576
- Students per teacher
- 21.3:1
- Resource Index
- 40/100
Similar high schools in Arlington
4 comparable high schools (grades 9-12) serving the same city.
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of Washington, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~1,650 students)
Similar student-teacher ratio (~20.9:1)
Next steps
Verify locally before acting on Arlington High School's federal record.
- Compare Arlington High School against another school. Compare schools
- Arlington School District's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Arlington High School
How many students attend Arlington High School?
Arlington High School has 1,650 students enrolled. It is a high school in Arlington, WA.
What is the student-teacher ratio at Arlington High School?
The student-teacher ratio at Arlington High School is 20.9:1, which is 19% higher than the Washington average of 17.6:1 and 33% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Arlington High School?
28.9% of students at Arlington High School are eligible for free lunch, compared to the Washington average of 45.0%.
What is the racial and ethnic makeup of Arlington High School?
The largest demographic group at Arlington High School is White at 67.4% of enrollment, in Arlington, WA.
What is the Resource Investment Index for Arlington High School?
Arlington High School has a Resource Investment Index of 56/100 (higher reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Arlington High School rank among high schools in Arlington?
By Resource Investment Index, Arlington High School ranks #2 of 4 high schools in Arlington, WA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in Arlington on the city page.
Is Arlington High School a good school?
Arlington High School earns 56/100 on the Resource Investment Index, with class sizes larger than 83% of Washington schools. It is also one of the largest schools in Washington. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Arlington School District?
Besides Arlington High School, Arlington School District also operates Eagle Creek Elementary (665 students), Post Middle School (645 students), and Kent Prairie Elementary (621 students). See the Arlington School District district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.