Excellent
#58 of 1,226 schools in OR
Top 5% in state
Annex Charter School
Elementary School · Annex SD 29
402 Annex Rd, Ontario, OR 97914
Enrollment
79
Student-Teacher
8.8:1
Score
9.1
Grades
Kindergarten – 8th
Enrollment
79
Student-Teacher
8.8:1
Score
9.1
Grades
Kindergarten – 8th
Data vintage
2022-23
Data vintage2022-23
How this school compares
Oregon schools
#58 of 1,226
In Ontario
#1 of 9
public schools
School environment
10.0 / 10
Excellent
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Annex Charter School
Elementary School in Ontario · grades Kindergarten – 8th. Start here, then compare fit against nearby and district options.
Pioneer Primary School
1.2 mi away. Use as a geographic alternative in the same move search.
Weiser High School
1.8 mi away. Use as a geographic alternative in the same move search.
About Annex Charter School
Annex Charter School is a public elementary school in Ontario, OR, part of Annex SD 29. Annex Charter School serves approximately 79 students, and covers grades Kindergarten-8th, and has a 8.8:1 student-teacher ratio. Annex Charter School has a current MySchoolScout rating of 9.1 out of 10 and ranks #58 of 1,226 schools in OR.
Structured state assessment records for Annex Charter School show 34% math proficiency (multi-year average, 2009-2025) and 45% reading/ELA proficiency (multi-year average, 2009-2025).
What's said publicly about Annex Charter School
Synthesized from public, attributable sources. Updated May 2026.
Sources (1)
- This school 9.1 · Excellent
- OR avg 6.5
What Parents Should Know
At 79 students, Annex Charter School is on the smaller side. That usually buys more individual attention and teachers who know every kid by name, with the trade-off of fewer electives and extracurriculars than a larger school can staff. Ask what activities it actually offers.
At 8.8:1 students to teachers, Annex Charter School sits well below the national average. Smaller classes like that usually mean more one-on-one time between students and teachers.
Annex Charter School is a charter school: publicly funded, but run with more independence than a traditional district school. Many charters are built around a specific model or focus, so it's worth understanding this one's mission, how enrollment works, and how it differs from the district schools nearby.
Score Breakdown
Full Profile · 3/3 metricsView breakdown
View breakdown
View breakdown
Annex Charter School — Students at Annex Charter School score 39% proficient, which is above what's typical for similar communities (expected: 31%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
72.2%
Students qualifying for federal meal assistance
Test Scores OR OSAS (2024-25)
Based on 26 test records from OR state assessments. About our data
Proficiency Trend
↓ DecliningAverage proficiency (% at or above grade level) across Math & ELA over time.
Source: EdFacts (NCES) and state assessment data. Growth score: 9.5/10.
How Annex Charter School Compares
See how Annex Charter School performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Location
402 Annex Rd, Ontario, OR 97914
Nearby Alternatives
Families considering Annex Charter School may also want to explore other elementary schools in the area. Aiken Elementary School (rated 6.7/10, 14.3 miles away), a more accessible option. Another option is ST PETER CATHOLIC SCHOOL (rated 6.5/10, 14.5 miles away), a more accessible option. Additionally, May Roberts Elementary School (rated 5.0/10, 14.1 miles away), a more accessible option. For more schools in Ontario, see our Ontario schools guide .
Nearby Schools
20 within 14.7 mi| School | Distance | Rating |
|---|---|---|
| PIONEER PRIMARY SCHOOL Weiser | 1.2 mi | 4.5 |
| WEISER HIGH SCHOOL Weiser | 1.8 mi | 6.8 |
| WEISER MIDDLE SCHOOL Weiser | 1.5 mi | 4.9 |
| INDIANHEAD ACADEMY HIGH SCHOOL Weiser | 1.9 mi | — |
| TRUE VINE CHRISTIAN SCHOOL Weiser | 1.7 mi | — |
| PARK INTERMEDIATE SCHOOL Weiser | 1.8 mi | 3.6 |
| Pioneer Elementary School Ontario | 8.5 mi | 4.9 |
| RIVER OF LIFE CHRISTIAN SCHOOL Payette | 10.3 mi | 8.2 |
| WESTSIDE ELEMENTARY SCHOOL Payette | 11.0 mi | 2.9 |
| PAYETTE PRIMARY SCHOOL Payette | 11.4 mi | 4.0 |
| PAYETTE ACADEMY Payette | 11.5 mi | 4.2 |
| TREASURE VALLEY SEVENTH-DAY ADVENTIST SCHOOL Payette | 11.8 mi | — |
| MCCAIN MIDDLE SCHOOL Payette | 11.5 mi | 5.6 |
| PAYETTE HIGH SCHOOL Payette | 12.1 mi | 5.3 |
| May Roberts Elementary School Ontario | 14.1 mi | 5.0 |
| Ontario High School Ontario | 14.3 mi | 7.5 |
| Aiken Elementary School Ontario | 14.3 mi | 6.7 |
| ST PETER CATHOLIC SCHOOL Ontario | 14.5 mi | 6.5 |
| Ontario Middle School Ontario | 14.6 mi | 7.8 |
| Four Rivers Community School Ontario | 14.7 mi | 8.5 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 97914 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$48,442
Median Home Value
$220,600
Median Rent
$813/mo
Population
19,879
College Educated
14.6%
Homeownership
61.8%
Avg Commute
15.8 min
Poverty Rate
17.8%
Median Age
36.2
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Willowcreek Elementary School Vale, OR | 9.3 |
| COMMUNITY TRANSITIONAL SCHOOL Portland, OR | 8.6 |
| Evergreen Elementary School Silverton, OR | 9.6 |
| ASHBROOK INDEPENDENT SCHOOL Corvallis, OR | 8.5 |
| Pratum Elementary School Salem, OR | 8.4 |
| Condon Elementary School Condon, OR | 8.2 |
Frequently Asked Questions
Common questions about Annex Charter School
What grades does Annex Charter School serve?
Annex Charter School serves students in grades Kindergarten through 8th.
How many students attend Annex Charter School?
Annex Charter School has an enrollment of approximately 79 students.
What is the student-teacher ratio at Annex Charter School?
The student-teacher ratio at Annex Charter School is 8.8:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Annex Charter School rank in OR?
Annex Charter School ranks #58 of 1,226 schools in OR.
What is Annex Charter School's MySchoolScout rating?
Annex Charter School has a current MySchoolScout rating of 9.1 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Annex Charter School?
Based on loaded state assessment records, Annex Charter School has 34% math proficiency (multi-year average, 2009-2025) and 45% reading/ELA proficiency (multi-year average, 2009-2025).
Is Annex Charter School a charter school?
Yes, Annex Charter School is a charter school. Charter schools are publicly funded but independently operated, often with more flexibility in curriculum and teaching methods.
Is Annex Charter School a Title I school?
No, Annex Charter School is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Annex Charter School?
72.2% of students at Annex Charter School qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
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Neighborhood Context
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Quick Facts NCES CCD (SY 2022-23)
- Grades
- Kindergarten – 8th
- Enrollment
- 79
- Student-Teacher Ratio
- 8.8:1
- Teachers (FTE)
- 9
- Free/Reduced Lunch
- 72.2%
- Type
- regular
- Setting
- Fringe Rural
- County
- Malheur County
- Chronic Absenteeism (SY 2022-23)
- 24.1%
- Phone
- (541) 262-3280
Resources & Links
District
Annex SD 29- District Enrollment
- 118
- Schools in District
- 1
- Per-Pupil Spending
- $26,183
- District Rank
- #1 of 1
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