- Enrollment
- 1,809
- Students per teacher
- 22.1:1
- Resource Index
- 27/100
Other / mixed grade configuration · West Linn, OR
Trillium Creek Primary School
Federal NCES profile for Trillium Creek Primary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 39/100.
2024-25 NCES dataOther / mixed grade configurationNCES 411317001825
👥 S:T ratio 20
🌟 Gifted program 70
🎓 Counselors 4
📋 Attendance 64
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Trillium Creek Primary School earns 39/100 on the Resource Investment Index, with class sizes larger than 78% of Oregon schools.
- #6 of 6
- schools in West Linn · Resource Index
- 39
- Resource Index · Typical
- 20:1
- large classes for Oregon
- 4.4%
- free-lunch eligible
Trillium Creek Primary School has class sizes larger than 78% of Oregon schools. Computed live against every Oregon school reporting to NCES.
By Resource Investment Index, Trillium Creek Primary School ranks #6 of 6 schools in West Linn, OR.
School address
District: West Linn-Wilsonville Sd 3j · Oregon
NCES ID 411317001825 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+28 students YoY
Trillium Creek Primary School grew from 459 students in 2022-23 to 487 in 2023-24 (+6.1%).
Teacher FTE lost 24.1 → 23.5 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Growing CCD campus
+28 students YoY 411317001825 · West Linn, OR Other · SMALL · TRAD
480 enr · 20:1 · 4.4% lunch · RII 39
Nearest enrollment peer: West Linn High School (1,809 students)
Trillium Creek Primary School grew from 459 students in 2022-23 to 487 in 2023-24 (+6.1%). Teacher FTE lost 24.1 → 23.5 across the same CCD years. Read with this school → · District book → · Oregon schools → · Find another →
Trillium Creek Primary School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- West Linn High
West Linn High School
1,809 students
- Wilsonville Hi
Wilsonville High School
1,258 students
- Rosemont Ridge 699
Rosemont Ridge Middle School
699 students
- Boeckman Creek 488
Boeckman Creek Primary School
488 students
- Lowrie Primary 482
Lowrie Primary School
482 students
- This school 480
Trillium Creek Primary School
480 students
What this shows Trillium Creek Primary School reports 480 students on the CCD universe file.
How Trillium Creek Primary School compares
Trillium Creek Primary School is a growing campus on CCD: ratios and free-lunch share vs Oregon and U.S. means.
| Metric | This school | vs Oregon | Oregon avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 20:1 | ▲ 14% | 17.6:1 | 15.7:1 |
| Free-lunch eligible | 4.4% | ▼ 92% | 52.8% | 51.7% |
| Enrollment | 480 | top 25% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
20:1
Leaner classes than 16% of US schools, heavier class loads than most.
480
Bigger than 59% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
4.4%
free-lunch eligible
- 92% below the Oregon average of 52.8%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
20:1
students per teacher
- 14% above state mean
Top 78% in Oregon - lower ratio than 22% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
14.6%
chronically absent (missed 10%+ of school days)
In the 10-15% range, above the pre-pandemic national baseline but within the broader post-pandemic picture.
Funding equity
$15,867
per pupil, district-wide
- below Oregon avg of $21,075
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors1.0 FTE
Per 480 students, the combined health-and-guidance staffing load for this school.
Discipline context
1
in-school suspensions + 2 out-of-school
Suspension rate: 0.2 per 100 students. Combined in-school and out-of-school rate: 0.6 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 72.9%
Two or More 11.7%
Hispanic or Latino 9.4%
Asian 5.0%
African American 1.0%
Largest group: White at 72.9% of enrollment.
Student-body diversity index 44.3/100
Simpson diversity index - at 44.3, Trillium Creek Primary School is less mixed than the Oregon school average of 47.1.
Programs
Gifted & talented Yes
District finance for West Linn-Wilsonville Sd 3j reports $15,867 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Trillium Creek Primary School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| West Linn High School | Larger | Similar economic need | Higher S:T ratio |
| Wilsonville High School | Larger | Higher economic need | Similar S:T ratio |
| Rosemont Ridge Middle School | Larger | Similar economic need | Similar S:T ratio |
| Boeckman Creek Primary School | Similar size | Higher economic need | Lower S:T ratio |
| Lowrie Primary School | Similar size | Higher economic need | Similar S:T ratio |
Comparisons are relative to Trillium Creek Primary School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,258
- Students per teacher
- 19.7:1
- Resource Index
- 32/100
- Enrollment
- 699
- Students per teacher
- 19.4:1
- Resource Index
- 38/100
- Enrollment
- 488
- Students per teacher
- 16.8:1
- Resource Index
- 26/100
- Enrollment
- 482
- Students per teacher
- 19.3:1
- Resource Index
- 32/100
Similar other schools in West Linn
5 comparable other schools (grades Mixed) serving the same city.
Willamette Primary School
Standard public school
384 students 17.5:1 students per teacher
Sunset Primary School
Standard public school
375 students 19.7:1 students per teacher
Cedaroak Park Primary School
Standard public school
348 students 18.3:1 students per teacher
Stafford Primary School
Standard public school
323 students 17:1 students per teacher
Bolton Primary School
Standard public school
222 students 15.9:1 students per teacher
Nationwide other schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~480 students)
Frequently asked questions about Trillium Creek Primary School
How many students attend Trillium Creek Primary School?
Trillium Creek Primary School has 480 students enrolled. It is a public school in West Linn, OR. CCD year-over-year: 459 (2022-23) → 487 (2023-24), up 28.
What is the student-teacher ratio at Trillium Creek Primary School?
The student-teacher ratio at Trillium Creek Primary School is 20:1, which is 14% higher than the Oregon average of 17.6:1 and 27% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Trillium Creek Primary School?
4.4% of students at Trillium Creek Primary School are eligible for free lunch, compared to the Oregon average of 52.8%.
What is the racial and ethnic makeup of Trillium Creek Primary School?
The largest demographic group at Trillium Creek Primary School is White at 72.9% of enrollment, in West Linn, OR.
What is the Resource Investment Index for Trillium Creek Primary School?
Trillium Creek Primary School has a Resource Investment Index of 39/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Trillium Creek Primary School rank among schools in West Linn?
By Resource Investment Index, Trillium Creek Primary School ranks #6 of 6 schools in West Linn, OR. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in West Linn on the city page.
What other schools are in West Linn-Wilsonville Sd 3j?
Besides Trillium Creek Primary School, West Linn-Wilsonville Sd 3j also operates West Linn High School (1,809 students), Wilsonville High School (1,258 students), and Rosemont Ridge Middle School (699 students). See the West Linn-Wilsonville Sd 3j district page for the complete list.