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SCHOOL COMMUNITY·ANNEX SD 29·NCES 410135000753

Annex Charter School

402 Annex Rd, Ontario, OR 97914 · (541) 262-3280 · Malheur County
GRADES KG–12COMBINED41-RURALCHARTERTITLE IREGULAR SCHOOL131 STUDENTS
Enrollment
131
Combined
STATE 384
Student : Teacher
16.4:1
8 FTE teachers
STATE 22.5:1
Free / Reduced Lunch
48%
63 students
STATE 76%
Community
0
0 members
Enrollment and student:teacher ratio compared against other combined schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade
Kindergarten
13
Grade 1
12
Grade 2
15
Grade 3
17
Grade 4
11
Grade 5
7
Grade 6
2
Grade 7
15
Grade 8
7
Grade 9
8
Grade 10
8
Grade 11
8
Grade 12
8
Student demographics
White
76%
STATE 57%
Hispanic
22%
STATE 26%
Two+
2%
STATE 7%
Native American
n/r
Pacific Islander
n/r
n/r: not reliably reported by NCES for this school. Hispanic, Pacific Islander, and Native American enrollment are systematically under-reported in the source data.
Gender split
Male
47%
Female
53%

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Test scores

OSAS 2024-25 . % Proficient
English Language Arts
36.0%
OR avg 43.0% . -25.8pp since 2023
Math
41.2%
OR avg 31.8% . -11.7pp since 2023
Source: OSAS. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
48.0%
composite math + reading, all grades
Predicted
43.9%
based on OR schools with similar FRL share
Beats by
+4.1pp
above demographic expectation
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 2024-25
Enrollment
131
+44 (+51%) vs 2017
Student : Teacher
16.4:1
was 17.4:1
% White
76%
was 67%
% Hispanic
22%
was 29%
% Black
0%
was 0%
% Asian
0%
was 0%
Source: NCES Common Core of Data

About Annex Charter School

As a minimally staffed multi-level school in Ontario, Oregon, Annex Charter School instructs 131 students from grades K through 12, run under Annex SD 29. By comparison, Oregon's public schools average about 384 students each, so Annex Charter School sits 66% below that benchmark.

Annex Charter School is a school of Annex SD 29, the district that handles curriculum, staffing, and budget for the campus.

On the student-mix side, Annex Charter School shows that White students make up the majority at 76%. The remainder breaks down as 22% Hispanic, 2% multiracial.

Looking at the economic backdrop, On paper, Annex Charter School has 8 full-time-equivalent teachers, translating to a class-load average of around 16.4:1. That figure is tighter than the state norm's 22.5:1 average. About 48% of enrolled students meet the income threshold for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal. That share is lower than Malheur County's rate of about 89%.

On a residual basis (actual vs predicted given the student mix), Annex Charter School performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 43.9%, the actual is 48.0%, a residual of +4.1 points.

Zooming out to the county, community-level numbers for Malheur County indicate median household earnings sit near $54,519, roughly 15% of adults have completed at least a four-year degree, and roughly 15% of residents live below the federal poverty line. In all, Malheur County runs 25 public schools (combined enrollment of about 6,566 students), of which Annex Charter School is one.

Nearest neighbor: PIONEER PRIMARY SCHOOL, around 1.3 miles off. Within five miles, there are 5 other public schools.

Geographically, the school is in a small-town area. As a public charter, Annex Charter School runs on public funding but with greater curricular and operational autonomy than a typical district school.

Over the past 7-year window. Annex Charter School's enrollment has grew 51% since 2018, when it stood at 87 (now 131). The White share of enrollment expanded from 67% to 76% over that span. The student-to-teacher ratio fell from 17.4:1 in 2018 to 16.4:1 today.

Within the allk12 community for this school, recent activity here tends to focus on enrollment questions, classroom assignments, and PTA news. The community welcomes input from current and former families.

Malheur County at a glance

View full county profile
Population
31,954
Census ACS
Median income
$54,519
Household, ACS
Bachelor's+
15%
Adults 25+
Poverty rate
15%
Below federal line
Schools in county
25
6,566 students

Quick facts

School name
Annex Charter School
District
Annex SD 29
Address
402 Annex Rd, Ontario, OR 97914
Phone
(541) 262-3280
County
Malheur County
Level
Combined
Grade range
KG–12
Total enrollment
131
Teachers (FTE)
8
Student–teacher ratio
16.4:1
Free/Reduced lunch
63 (48%)
Locale
41-Rural: Fringe
NCES ID
410135000753
Charter school
Yes
Virtual school
No

Related schools

Other schools in Ontario
Nearby schools

Frequently asked questions

About Annex Charter School
What is the total enrollment at Annex Charter School?
Annex Charter School enrolls approximately 131 students in grades KG-12.
What grades does Annex Charter School serve?
Annex Charter School serves grades KG-12.
How many students per teacher at Annex Charter School?
Approximately 16.4:1 students per teacher at Annex Charter School.
What is the racial breakdown of students at Annex Charter School?
At Annex Charter School, the student body is approximately 76% White, 22% Hispanic, 2% Two or more.
What district is Annex Charter School in?
Annex Charter School is part of Annex SD 29.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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