Triangle Lake Charter School, formerly known as Triangle Lake School, is a K-12 public school in Blachly, Oregon, United States. It is the only school in the Blachly School District.
Serving 416 students in grades Kindergarten-12, Triangle Lake Charter School ranks in the bottom 50% of all schools in Oregon for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 25-29% (which is lower than the Oregon state average of 31%). The percentage of students achieving proficiency in reading/language arts is 35-39% (which is lower than the Oregon state average of 44%).
The student-teacher ratio of 23:1 is higher than the Oregon state level of 17:1.
Minority enrollment is 13% of the student body (majority Hispanic), which is lower than the Oregon state average of 43% (majority Hispanic).
Quick Facts (2026)
- School Type: Charter School
- Grades: Kindergarten-12
- Enrollment: 416 students
- Student-Teacher Ratio: 23:1
- Minority Enrollment: 13%
- Graduation Rate: 40-59% (Btm 50% in OR)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 25-29% (Top 50%)
- Reading Proficiency: 35-39% (Btm 50%)
- Science Proficiency: 20-29% (Btm 50%)
- Source: National Center for Education Statistics (NCES), OR Dept. of Education
School Overview
Triangle Lake Charter School's student population of 416 students has grown by 91% over five school years.
The teacher population of 18 teachers has grown by 12% over five school years.
School Type
Grades Offered
Grades Kindergarten-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
416 students
Total Classroom Teachers
18 teachers
Year Founded
1905
School Motto
Integrity. Compassion. Ingenuity. Collaboration.
School Rankings
Triangle Lake Charter School ranks within the bottom 50% of all 1,174 schools in Oregon (based off of combined math and reading proficiency testing data).
The diversity score of Triangle Lake Charter School is 0.24, which is less than the diversity score at state average of 0.60. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#675 out of 1174 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
25-29%
31%
Reading/Language Arts Test Scores (% Proficient)
35-39%
44%
Science Test Scores (% Proficient)
20-29%
30%
Student-Teacher Ratio
23:1
17:1
American Indian
1%
1%
Asian
1%
4%
Hispanic
5%
26%
Black
1%
3%
White
87%
57%
Hawaiian
n/a
1%
Two or more races
5%
8%
All Ethnic Groups
Graduation Rate
40-59%
81%
Eligible for Free Lunch
69%
67%
Eligible for Reduced Lunch
2%
3%
School Statewide Testing
School District Name
Blachly SD 90 School District
Source: National Center for Education Statistics (NCES), OR Dept. of Education
School Notes
- School Mascot: Lakers
Frequently Asked Questions
What is Triangle Lake Charter School's ranking?
Triangle Lake Charter School is ranked #675 out of 1,174 schools, which ranks it among the bottom 50% of public schools in Oregon.
What schools are Triangle Lake Charter School often compared to?
Triangle Lake Charter Schoolis often viewed alongside schools like Village School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
25-29% of students have achieved math proficiency (compared to the 31% OR state average), while 35-39% of students have achieved reading proficiency (compared to the 44% OR state average).
What is the graduation rate of Triangle Lake Charter School?
The graduation rate of Triangle Lake Charter School is 40-59%, which is lower than the Oregon state average of 81%.
How many students attend Triangle Lake Charter School?
416 students attend Triangle Lake Charter School.
What is the racial composition of the student body?
87% of Triangle Lake Charter School students are White, 5% of students are Hispanic, 5% of students are Two or more races, 1% of students are American Indian, 1% of students are Asian, and 1% of students are Black.
What is the student-teacher ratio of Triangle Lake Charter School?
Triangle Lake Charter School has a student ration of 23:1, which is higher than the Oregon state average of 17:1.
What grades does Triangle Lake Charter School offer ?
Triangle Lake Charter School offers enrollment in grades Kindergarten-12 (Supplemental Virtual).
What school district is Triangle Lake Charter School part of?
Triangle Lake Charter School is part of Blachly SD 90 School District.
School Reviews
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