Enrollment
366
High
DISTRICT 395 · STATE 630
SCHOOL COMMUNITY·RAINIER SD 13·NCES 410326500184
Rainier Jr/Sr High School
28170 Old Rainier Rd, Rainier, OR 97048 · (503) 556-4215 · Columbia County
GRADES 07–12HIGH41-RURALTITLE IREGULAR SCHOOL366 STUDENTS
Student : Teacher
16.6:1
22 FTE teachers
DISTRICT 17.9:1 · STATE 19.8:1
Free / Reduced Lunch
79%
289 students
DISTRICT 84% · STATE 76%
Community
0
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade
Student demographics
Student head counts by race/ethnicity from federal NCES enrollment data. Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
School pathway
Feeds from
Based on grade levels within Rainier SD 13. Attendance zones can vary; confirm enrollment with the district.
Test scores
OSAS 2024-25 . % ProficientEnglish Language Arts
47.9%
OR avg 43.0% . +5.5pp since 2023
Math
21.2%
OR avg 31.8% . +5.4pp since 2023
What this means: On the OSAS, Oregon's statewide test, about 48 of every 100 students at this school read and write at grade level and about 21 of 100 do math at grade level. Across all Oregon schools, those numbers are about 43 and 32. Reading and writing scores are up about 6 points since 2023, while math scores are up about 5 points.
Source: OSAS. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
30.1%
composite math + reading, all grades
Predicted
31.9%
based on OR schools with similar FRL share
Beats by
-1.8pp
below demographic expectation
What this means: About 30% of students here test proficient in math and reading, compared with the roughly 32% typical for Oregon schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Oregon's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
7-year change
SY 2017-18 vs SY 2024-25Enrollment
366
-55 (-13%) vs 2017
Student : Teacher
16.6:1
was 18.1:1
% White
82%
was 84%
% Hispanic
10%
was 8%
% Black
1%
was 0%
% Asian
1%
was 0%
Source: NCES Common Core of Data
About Rainier Jr/Sr High School
Rainier Jr/Sr High School is one of the compact senior highs in Rainier, Oregon, operated by Rainier SD 13, with 366 students on its rolls from grades 7 through 12. By comparison, Oregon's public schools average about 630 students each, so Rainier Jr/Sr High School sits 42% smaller than that benchmark.
Across the 2 schools in Rainier SD 13 (789 students total), Rainier Jr/Sr High School accounts for its share of the district's footprint.
In terms of who attends, Rainier Jr/Sr High School records that the student body is overwhelmingly White (82%). Other groups include 10% Hispanic, 5% multiracial. That mix tracks the wider county fairly closely.
Looking at the economic backdrop, On paper, Rainier Jr/Sr High School has 22 full-time-equivalent teachers, translating to a class-load average of around 16.6:1. The state averages around 19.8:1, so this campus is tighter than the state norm typical. Around 79% of the student body qualifies for free or reduced-price meals, which schools and policymakers use as a rough income-mix signal. Set against Columbia County (around 62%), the school's rate is somewhat above typical.
With demographic context factored in, Rainier Jr/Sr High School tracks the demographic baseline. The model predicts 31.9% given the school's FRL share; actual proficiency is 30.1%.
Zooming out to the county, ACS estimates for Columbia County put median household income runs about $87,458, about 20% of the adult population holds a bachelor's degree or above, and census figures put the poverty rate at about 6%. Rainier Jr/Sr High School is one of 23 public schools in Columbia County (combined enrollment of about 6,932 students).
Nearest neighbor: Hudson Park Elementary School, around 0.1 miles off. Within five miles, there are 8 other public schools.
Geographically, the school is in an outlying area.
Over the past 7-year window. Rainier Jr/Sr High School's enrollment has fell 13% since 2018, when it stood at 421 (now 366). Class-load math has tightened: from 18.1:1 in 2018 to 16.6:1 in 2025.
On the community side, recent activity here tends to focus on pickup logistics, teacher feedback, and after-school programs. Parents, students, alumni, and staff are welcome to weigh in.
Columbia County at a glance
View full county profilePopulation
53,493
Census ACS
Median income
$87,458
Household, ACS
Bachelor's+
20%
Adults 25+
Poverty rate
6%
Below federal line
Schools in county
23
6,932 students
Quick facts
Related schools
Other schools in Rainier SD 13
- Hudson Park Elementary SchoolElementary · 423 students
Nearby schools
- Hudson Park Elementary School0.1 mi · 423
- Saint Helens Elementary2.9 mi · 299
- Kessler Elementary School3.4 mi · 349
- Olympic Elementary School3.5 mi · 381
- Monticello Middle School3.6 mi · 525
- Discovery High School-Achieve3.6 mi · 57
Frequently asked questions
About Rainier Jr/Sr High SchoolHow large is Rainier Jr/Sr High School?
Rainier Jr/Sr High School enrolls approximately 366 students in grades 07-12.
What grades does Rainier Jr/Sr High School serve?
Rainier Jr/Sr High School serves grades 07-12.
What is the student-teacher ratio at Rainier Jr/Sr High School?
The student-to-teacher ratio at Rainier Jr/Sr High School is approximately 16.6:1 (22 FTE teachers).
What is the racial breakdown of students at Rainier Jr/Sr High School?
At Rainier Jr/Sr High School, the student body is approximately 82% White, 10% Hispanic, 1% Black, 1% Asian, 5% Two or more.
Is Rainier Jr/Sr High School public or private?
Rainier Jr/Sr High School is a public K-12 school, overseen by Rainier SD 13.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.