Enrollment
753
Washington · 2024-25 NCES data
Middle school (grades 6-8) · Seattle, WA
Mercer International Middle School
Federal NCES profile for Mercer International Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 66/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 530771001136
👥 S:T ratio 43
🌟 Gifted program 70
🎓 Counselors 62
📋 Attendance 88
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mercer International Middle School earns 66/100 on the Resource Investment Index, with class sizes smaller than 75% of Washington schools. It is also more racially and ethnically mixed than most Washington schools.
- #1 of 9
- middle schools in Seattle · Resource Index
- 66
- Resource Index · Higher
- 14.2:1
- small classes for Washington
- 51.0%
- free-lunch eligible
Mercer International Middle School has class sizes smaller than 75% of Washington schools. Computed live against every Washington school reporting to NCES.
By Resource Investment Index, Mercer International Middle School ranks #1 of 9 middle schools in Seattle, WA.
School address
District: Seattle School District No. 1 · Washington
NCES ID 530771001136 Verify on NCES CCD record →
Teachers (FTE)
53.0
Federal CCD staff survey
Students per teacher
14.2:1
vs 17.6:1 Washington avg
-19% vs state
Free-lunch eligible
51.0%
vs 45.0% Washington avg
+13% vs state
Student-teacher ratio in context
How Mercer International Middle School compares with Washington and U.S. medians
What stands out at Mercer International Middle School
Mercer International Middle School is a higher-need, large middle school in Seattle, Washington, enrolling 753 students.
Class sizes run a bit leaner than typical: 14.2:1 puts it in the smaller third of Washington schools by student-teacher ratio.
Its free-meal eligibility rate of 51.0% lands close to the Washington typical range, neither a high- nor low-need campus by this measure.
Enrollment of 753 puts it in the larger third of Washington schools by headcount.
Its Resource Investment Index outscores 96% of the 2,394 Washington schools with a score on record, a top-tier result on this measure.
Among 320 similarly sized, similarly resourced-need Washington schools statewide, it ranks #2, a top-tier result once campus size and economic need are matched.
Its student body is led by Asian (40%) and Hispanic or Latino (21%), more mixed than most schools in the state (diversity index 75/100).
Counselor coverage is strong, about 188 students per counselor, inside the American School Counselor Association's recommended 250:1.
Attendance holds up well here: only 4.8% of students were chronically absent, below the typical post-pandemic national figure.
Among Seattle's middle schools, it stands alongside Jane Addams Middle School (824 students): Mercer International Middle School is smaller than that campus by headcount and runs leaner classes (14.2:1 vs 17.2:1).
Seattle School District No. 1 also operates Lincoln High School (1,770 students) and Ballard High School (1,697 students) alongside Mercer International Middle 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 Mercer International Middle School compares
Mercer International Middle 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 | 14.2:1 | ▼ 19% | 17.6:1 | 15.7:1 |
| Free-lunch eligible | 51.0% | ▲ 13% | 45.0% | 51.7% |
| Enrollment | 753 | top 12% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14.2:1
Leaner classes than 55% of US schools, a middle-of-the-pack class size.
753
Bigger than 83% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
51.0%
free-lunch eligible
- 13% above the Washington average of 45.0%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
14.2:1
students per teacher
- 19% below state mean
Top 25% in Washington - lower ratio than 75% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
4.8%
chronically absent (missed 10%+ of school days)
Below 5%, comfortably under the pre-pandemic national baseline for chronic absenteeism.
Funding equity
$20,430
per pupil, district-wide
- above Washington avg of $19,487
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors4.0 FTE
Per 188 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 33 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 4.4 per 100 students. Reported via the Civil Rights Data Collection.
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
Asian 40.1%
Hispanic or Latino 20.9%
African American 15.3%
White 12.1%
Two or More 10.7%
American Indian / Alaska Native 0.5%
Native Hawaiian / Pacific Islander 0.3%
Largest group: Asian at 40.1% of enrollment.
Student-body diversity index 74.6/100
Simpson diversity index - at 74.6, Mercer International Middle School is more mixed than the Washington school average of 53.3.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Seattle School District No. 1, which includes Mercer International Middle School.
$20,430
Per student
+5%
vs Washington
Avg $19,487
+23%
vs U.S.
Avg $16,593
Revenue mix
Local 40.0%
State 50.6%
Federal 9.3%
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 Mercer International Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Lincoln High School | Larger | Lower economic need | Higher S:T ratio |
| Ballard High School | Larger | Lower economic need | Higher S:T ratio |
| Roosevelt High School | Larger | Lower economic need | Higher S:T ratio |
| Garfield High School | Larger | Lower economic need | Higher S:T ratio |
| West Seattle High School | Larger | Lower economic need | Higher S:T ratio |
Comparisons are relative to Mercer International Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,770
- Students per teacher
- 24.6:1
- Resource Index
- 46/100
- Enrollment
- 1,697
- Students per teacher
- 22.6:1
- Resource Index
- 46/100
- Enrollment
- 1,542
- Students per teacher
- 20.6:1
- Resource Index
- 46/100
- Enrollment
- 1,507
- Students per teacher
- 22.2:1
- Resource Index
- 39/100
- Enrollment
- 1,479
- Students per teacher
- 24.6:1
- Resource Index
- 35/100
Similar middle schools in Seattle
6 comparable middle schools (grades 6-8) serving the same city.
Jane Addams Middle School
Standard public school
824 students 17.2:1 students per teacher
Aki Kurose Middle School
Standard public school
817 students 17.4:1 students per teacher
Robert Eagle Staff Middle School
Standard public school
729 students 19.2:1 students per teacher
Cascade Middle School
Standard public school
671 students 15.6:1 students per teacher
Dimmitt Middle School
Standard public school
605 students 16.4:1 students per teacher
Edmonds S. Meany Middle School
Standard public school
504 students 17.4:1 students per teacher
Similar middle 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 (~753 students)
Similar student-teacher ratio (~14.2:1)
Next steps
Verify locally before acting on Mercer International Middle School's federal record.
- Compare Mercer International Middle School against another school. Compare schools
- Seattle School District No. 1'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 Mercer International Middle School
How many students attend Mercer International Middle School?
Mercer International Middle School has 753 students enrolled. It is a middle school in Seattle, WA.
What is the student-teacher ratio at Mercer International Middle School?
The student-teacher ratio at Mercer International Middle School is 14.2:1, which is 19% lower than the Washington average of 17.6:1 and 10% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Mercer International Middle School?
51.0% of students at Mercer International Middle School are eligible for free lunch, compared to the Washington average of 45.0%.
What is the racial and ethnic makeup of Mercer International Middle School?
The largest demographic group at Mercer International Middle School is Asian at 40.1% of enrollment, in Seattle, WA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 74.6/100.
What is the Resource Investment Index for Mercer International Middle School?
Mercer International Middle School has a Resource Investment Index of 66/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Mercer International Middle School rank among middle schools in Seattle?
By Resource Investment Index, Mercer International Middle School ranks #1 of 9 middle schools in Seattle, WA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Seattle on the city page.
Is Mercer International Middle School a good school?
Mercer International Middle School earns 66/100 on the Resource Investment Index, with class sizes smaller than 75% of Washington schools. It is also more racially and ethnically mixed than most Washington schools. 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 Seattle School District No. 1?
Besides Mercer International Middle School, Seattle School District No. 1 also operates Lincoln High School (1,770 students), Ballard High School (1,697 students), and Roosevelt High School (1,542 students). See the Seattle School District No. 1 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.