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#862 of 1,226 schools in OR

Triangle Lake Charter School

School · Blachly SD 90

20264 Blachly Grange Rd, Blachly, OR 97412

Charter

Enrollment

399

Student-Teacher

23.5:1

Score

5.2

Grades

Kindergarten – 12th

Data vintage2022-23

How this school compares

Oregon schools

#862 of 1,226

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Triangle Lake Charter School

5.2/10

School in Blachly · grades Kindergarten – 12th. Start here, then compare fit against nearby and district options.

Alsea Charter School

5.4/10

13.1 mi away. Use as a geographic alternative in the same move search.

Elmira High School

5.3/10

12.4 mi away. Use as a geographic alternative in the same move search.

About Triangle Lake Charter School

Triangle Lake Charter School is a public school in Blachly, OR, part of Blachly SD 90. Triangle Lake Charter School serves approximately 399 students, and covers grades Kindergarten-12th, and has a 23.5:1 student-teacher ratio. Triangle Lake Charter School has a current MySchoolScout rating of 5.2 out of 10 and ranks #862 of 1,226 schools in OR.

Structured state assessment records for Triangle Lake Charter School show 43% math proficiency (multi-year average, 2009-2025) and 57% reading/ELA proficiency (multi-year average, 2009-2025).

How it compares1.1 pts below OR schools
  • This school 5.2 · Average
  • OR avg 6.3

What Parents Should Know

Triangle Lake Charter School runs 23.5:1 students to teachers, above the national average. That often means bigger classes. Ask how the school supports kids who need extra help, and whether there are teaching assistants or small-group time.

Triangle Lake 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.

Triangle Lake Charter School sits in a rural area, which can mean longer drives for some families. Rural schools are often community anchors with smaller classes, but check transportation, after-school options, and access to specialized services before you commit.

Score Breakdown

Full Profile · 4/4 metrics
Student Progress2.5Needs Improvement25%
Year-over-year improvement in student test scores.
View breakdown
Years of Data15
Annual Change-3.86 pts/yr
Data Period2009–2025
TrendDeclining
Academics4.5Below Average25%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency22.3% (2025 OSAS)
Reading/ELA Proficiency37% (2025 OSAS)
Math vs. State Avg-9.5 pts
Reading vs. State Avg-6 pts
Overall Proficiency30% (2025 OSAS, Math+ELA)
Expected (poverty-adj.)46% (model expectation from 2025 OSAS)
vs. Expected-16.4 pts
Adjusted Percentile26th
College Readiness7.9Very Good30%
Graduation rates, AP course participation, and IB availability.
View breakdown
4-Year Graduation Rate50%+
IB ProgramNo
Resources & Environment5.5Average20%
Student-teacher ratio, per-pupil spending, and attendance.
View breakdown
Student-Teacher Ratio23.5:1
Per-Pupil Spending$15,330
Chronic Absenteeism11.5%

Triangle Lake Charter School — Students at Triangle Lake Charter School score 30% proficient, which is below what's typical for similar communities (expected: 46%).

How we calculate scores →

Equity & Diversity

Shown separately, not included in overall score

Free/Reduced Lunch

24.6%

Students qualifying for federal meal assistance

Test Scores OR OSAS (2024-25)

Math Proficiency 42.7% (multi-year average, 2009-2025)
School
State
31.8% (2025 OSAS)
ELA Proficiency 57.0% (multi-year average, 2009-2025)
School
State
43.0% (2025 OSAS)

Based on 30 test records from OR state assessments. About our data

Proficiency Trend

↓ Declining

Average proficiency (% at or above grade level) across Math & ELA over time.

2009
Math
67%
ELA
87%
2010
Math
72%
ELA
92%
2011
Math
67%
ELA
77%
2012
Math
72%
ELA
82%
2013
Math
62%
ELA
77%
2014
Math
37%
ELA
57%
2015
Math
42%
ELA
52%
2016
Math
37%
ELA
42%
2017
Math
32%
ELA
52%
2018
Math
32%
ELA
37%
2019
Math
32%
ELA
37%
2020*
Math
24.5%
ELA
44.5%
2021*
Math
24.5%
ELA
44.5%
2022
Math
17%
ELA
37%
2025
Math
22.3%
ELA
37%

* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.

Source: EdFacts (NCES) and state assessment data. Growth score: 2.5/10.

How Triangle Lake Charter School Compares

See how Triangle Lake Charter School performs across key quality dimensions compared to state benchmarks.

Overall Score
5.2/10
30th percentile in OR
Academic
4.5/10
Below Average
Growth
2.5/10
Needs Improvement
Environment
5.5/10
Average
Advanced STEM
4/5
Subjects offered

Funding & Resources

Free/Reduced Lunch
Students eligible for subsidized meals
25%
Teaching Staff
24:1 student-teacher ratio
17 teachers
Chronic Absenteeism
Students missing 15+ days per year (SY 2022-23)
11.5%

Programs & Offerings

Advanced STEM Courses4 of 5 advanced subjects offered
Algebra II, Advanced Math, Calculus, Chemistry, Physics·CRDC 2021-22

Data as of 2021-22 · Source: CRDC via Urban Institute · Learn more

Location

20264 Blachly Grange Rd, Blachly, OR 97412

Nearby Alternatives

Families considering Triangle Lake Charter School may also want to explore other schools in the area. Crow High School (rated 8.6/10, 18.3 miles away, in nearby Eugene), which scores notably higher. Another option is Inavale Community Partners dba Muddy Creek Charter School (rated 8.1/10, 21.0 miles away, in nearby Corvallis), which scores notably higher. Additionally, Territorial Elementary School (rated 7.8/10, 11.7 miles away, in nearby Junction City), which scores notably higher. For more schools in Blachly, see our Blachly schools guide .

Nearby Schools

20 within 19.6 mi
School Distance Rating
Alsea Charter School Alsea 13.1 mi 5.4
Elmira High School Elmira 12.4 mi 5.3
Elmira Elementary School Elmira 12.7 mi 5.6
Fern Ridge Middle School Elmira 13.0 mi 6.8
Territorial Elementary School Junction City 11.7 mi 7.8
West Lane Charter School Veneta 13.6 mi 4.9
Veneta Elementary School Veneta 14.0 mi 7.1
COUNTRYSIDE CHRISTIAN SCHOOL Veneta 14.4 mi
Monroe Grade School Monroe 14.7 mi 4.8
Monroe High School Monroe 15.0 mi 7.2
Applegate Elementary School Eugene 17.6 mi 6.7
Crow High School Eugene 18.3 mi 8.6
Oaklea Middle School Junction City 16.5 mi 5.5
Junction City High School Junction City 16.6 mi 4.3
Inavale Community Partners dba Muddy Creek Charter School Corvallis 21.0 mi 8.1
Laurel Elementary School Junction City 16.8 mi 6.8
Mapleton Jr/Sr High School Mapleton 18.8 mi 5.4
Mapleton Elementary School Mapleton 18.9 mi 5.9
Meadow View School Eugene 18.8 mi 4.8
Prairie Mountain School Eugene 19.6 mi 3.9

Neighborhood Census ACS (2019-2023)

Census data for ZIP 97412 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$71,563

Median Home Value

$285,500

Median Rent

$1,097/mo

Population

640

College Educated

31.2%

Homeownership

85.8%

Poverty Rate

16.9%

Median Age

44.6

Similar Schools

Schools in the same state with comparable level, size, and ratings

School Rating
WESTERN CHRISTIAN SCHOOL Salem, OR 5.3
Prairie City School Prairie City, OR 5.1
Alsea Charter School Alsea, OR 5.4
DAMASCUS CHRISTIAN SCHOOL Damascus, OR 5.0
SOUTHWEST CHRISTIAN SCHOOL Beaverton, OR 5.4
CENTRAL CHRISTIAN SCHOOL Redmond, OR 5.5

Frequently Asked Questions

Common questions about Triangle Lake Charter School

What grades does Triangle Lake Charter School serve?

Triangle Lake Charter School serves students in grades Kindergarten through 12th.

How many students attend Triangle Lake Charter School?

Triangle Lake Charter School has an enrollment of approximately 399 students.

What is the student-teacher ratio at Triangle Lake Charter School?

The student-teacher ratio at Triangle Lake Charter School is 23.5:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.

How does Triangle Lake Charter School rank in OR?

Triangle Lake Charter School ranks #862 of 1,226 schools in OR.

What is Triangle Lake Charter School's MySchoolScout rating?

Triangle Lake Charter School has a current MySchoolScout rating of 5.2 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 Triangle Lake Charter School?

Based on loaded state assessment records, Triangle Lake Charter School has 43% math proficiency (multi-year average, 2009-2025) and 57% reading/ELA proficiency (multi-year average, 2009-2025).

Is Triangle Lake Charter School a charter school?

Yes, Triangle Lake Charter School is a charter school. Charter schools are publicly funded but independently operated, often with more flexibility in curriculum and teaching methods.

Is Triangle Lake Charter School a Title I school?

No, Triangle Lake Charter School is not currently a Title I school.

What does the Free & Reduced Lunch percentage mean for Triangle Lake Charter School?

24.6% of students at Triangle Lake 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.

11 schools nearby View map →

Neighborhood Context

Walk Score
3 Car-Dependent
Bike Score
9 Somewhat Bikeable

Powered by Walk Score

Quick Facts NCES CCD (SY 2022-23)

Grades
Kindergarten – 12th
Enrollment
399
Student-Teacher Ratio
23.5:1
Teachers (FTE)
17
Free/Reduced Lunch
24.6%
Type
regular
Setting
Distant Rural
County
Lane County
Chronic Absenteeism (SY 2022-23)
11.5%
4-Year Graduation
50%+

District

Blachly SD 90
District Enrollment
399
Schools in District
1
Per-Pupil Spending
$15,330
District Rank
#1 of 1

How we rate schools

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