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Excellent

#99 of 1,226 schools in OR

Top 8% in state

Lost River High School

High School · Klamath County SD

23330 Hwy 50, Merrill, OR 97633

Enrollment

240

Student-Teacher

17.1:1

Score

8.8

Grades

7th – 12th

Data vintage2022-23

How this school compares

Oregon schools

#99 of 1,226

In Merrill

#1 of 2

public schools

In district

#3 of 20

Klamath County SD

Equity

9.1 / 10

Excellent

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Lost River High School

8.8/10

High School in Merrill · grades 7th – 12th. Start here, then compare fit against nearby and district options.

Tulelake Basin Elementary

4.2/10

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

Pedro Valley School

Nearby

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

About Lost River High School

Lost River High School is a public high school in Merrill, OR, part of Klamath County SD. Lost River High School serves approximately 240 students, and covers grades 7th-12th, and has a 17.1:1 student-teacher ratio. Lost River High School has a current MySchoolScout rating of 8.8 out of 10 and ranks #99 of 1,226 schools in OR.

Structured state assessment records for Lost River High School show 44% math proficiency (multi-year average, 2009-2025) and 60% reading/ELA proficiency (multi-year average, 2009-2025).

How it compares1.4 pts above district
  • This school 8.8 · Excellent
  • District avg 7.4
  • OR avg 5.9

What Parents Should Know

Lost River High 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 Progress8.8Excellent25%
Year-over-year improvement in student test scores.
View breakdown
Years of Data15
Annual Change-1.79 pts/yr
Data Period2009–2025
TrendDeclining
Academics8.7Excellent25%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency34.7% (2025 OSAS)
Reading/ELA Proficiency58.5% (2025 OSAS)
Math vs. State Avg+2.9 pts
Reading vs. State Avg+15.5 pts
Overall Proficiency47% (2025 OSAS, Math+ELA)
Expected (poverty-adj.)30% (model expectation from 2025 OSAS)
vs. Expected+16.8 pts
Adjusted Percentile80th
College Readiness9.1Excellent30%
Graduation rates, AP course participation, and IB availability.
View breakdown
4-Year Graduation Rate80%+
IB ProgramNo
Resources & Environment8.7Excellent20%
Student-teacher ratio, per-pupil spending, and attendance.
View breakdown
Student-Teacher Ratio17.1:1
Per-Pupil Spending$15,812
Chronic Absenteeism22.9%

Lost River High School — Students at Lost River High School score 47% proficient, which is above what's typical for similar communities (expected: 30%).

How we calculate scores →

Equity & Diversity

Shown separately, not included in overall score

Free/Reduced Lunch

75.4%

Students qualifying for federal meal assistance

Test Scores OR OSAS (2024-25)

Math Proficiency 44.2% (multi-year average, 2009-2025)
School
State
31.8% (2025 OSAS)
ELA Proficiency 60.4% (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

→ Stable

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

2009
Math
57%
ELA
62%
2010
Math
67%
ELA
77%
2011
Math
72%
ELA
72%
2012
Math
62%
ELA
67%
2013
Math
57%
ELA
52%
2014
Math
27%
ELA
52%
2015
Math
47%
ELA
62%
2016
Math
52%
ELA
67%
2017
Math
37%
ELA
67%
2018
Math
42%
ELA
62%
2019
Math
42%
ELA
62%
2020*
Math
22%
ELA
47%
2021*
Math
22%
ELA
47%
2022
Math
22%
ELA
52%
2025
Math
34.7%
ELA
58.5%

* 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: 8.8/10.

How Lost River High School Compares

See how Lost River High School performs across key quality dimensions compared to state benchmarks.

Overall Score
8.8/10
92th percentile in OR
Academic
8.7/10
Excellent
Growth
8.8/10
Excellent
Environment
8.7/10
Excellent
Sports
7
3 boys' · 4 girls'
Advanced STEM
3/5
Subjects offered
Gifted & Talented
Yes
Program available

Funding & Resources

Free/Reduced Lunch
Students eligible for subsidized meals
75%
Teaching Staff
17:1 student-teacher ratio
14 teachers
Chronic Absenteeism
Students missing 15+ days per year (SY 2022-23)
22.9%

Programs & Offerings

Athletics7sports offered
3 boys'·4 girls'·10 teams (incl. JV)·CRDC 2021-22
Advanced STEM Courses3 of 5 advanced subjects offered
Algebra II, Advanced Math, Calculus, Chemistry, Physics·CRDC 2021-22
Gifted & Talented Program Available
This school offers a gifted and talented program for qualifying students. · CRDC 2021-22

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

Location

23330 Hwy 50, Merrill, OR 97633

Nearby Alternatives

Families considering Lost River High School may also want to explore other high schools in the area. Henley High School (rated 9.1/10, 13.5 miles away, in nearby Klamath Falls), with a very similar rating. Another option is Mazama High School (rated 7.6/10, 17.3 miles away, in nearby Klamath Falls), a more accessible option. Additionally, Tulelake High (rated 6.9/10, 4.8 miles away, in nearby Tulelake), a more accessible option. For more schools in Merrill, see our Merrill schools guide .

Nearby Schools

20 within 17.3 mi
School Distance Rating
Tulelake Basin Elementary Tulelake 4.4 mi 4.2
PEDRO VALLEY SCHOOL Tulelake 4.5 mi
Tulelake High Tulelake 4.8 mi 6.9
Malin Elementary School Malin 4.7 mi 8.6
Merrill Elementary School Merrill 5.2 mi 6.0
Pedro Valley Tulelake 11.7 mi
Bonanza Elementary School Bonanza 13.7 mi 8.1
Bonanza Junior/Senior High School Bonanza 13.7 mi 5.7
Henley High School Klamath Falls 13.5 mi 9.1
Henley Elementary School Klamath Falls 13.5 mi 7.6
Falcon Heights Klamath Falls 13.6 mi 4.2
Henley Middle School Klamath Falls 13.7 mi 6.5
Brixner Junior High School Klamath Falls 16.1 mi 4.2
CROSSPOINT CHRISTIAN SCHOOL Klamath Falls 16.3 mi 6.3
Peterson Elementary School Klamath Falls 16.7 mi 5.7
Ferguson Elementary School Klamath Falls 16.9 mi 8.3
Shasta Elementary School Klamath Falls 17.4 mi 6.4
NEW HORIZON CHRISTIAN SCHOOL Klamath Falls 17.5 mi 7.1
Mazama High School Klamath Falls 17.3 mi 7.6
Stearns Elementary School Klamath Falls 17.3 mi 5.4

Neighborhood Census ACS (2019-2023)

Census data for ZIP 97633 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$61,094

Median Home Value

$211,400

Median Rent

$829/mo

Population

1,456

College Educated

13.2%

Homeownership

61.3%

Poverty Rate

10.6%

Median Age

27.2

Similar Schools

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

School Rating
Heppner Junior/Senior High School Heppner, OR 8.9
Oakland High School Oakland, OR 8.7
NORTHWEST ACADEMY Portland, OR 8.4
PORTLAND ADVENTIST ACADEMY Portland, OR 8.4
Grant Union Junior/Senior High School John Day, OR 8.2
Riverdale High School Portland, OR 9.5

Frequently Asked Questions

Common questions about Lost River High School

What grades does Lost River High School serve?

Lost River High School serves students in grades 7th through 12th.

How many students attend Lost River High School?

Lost River High School has an enrollment of approximately 240 students.

What is the student-teacher ratio at Lost River High School?

The student-teacher ratio at Lost River High School is 17.1:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.

How does Lost River High School rank in OR?

Lost River High School ranks #99 of 1,226 schools in OR.

What is Lost River High School's MySchoolScout rating?

Lost River High School has a current MySchoolScout rating of 8.8 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 Lost River High School?

Based on loaded state assessment records, Lost River High School has 44% math proficiency (multi-year average, 2009-2025) and 60% reading/ELA proficiency (multi-year average, 2009-2025).

Is Lost River High School a charter school?

No, Lost River High School is not a charter school. It is a traditional public school operated by the local school district.

Is Lost River High School a Title I school?

No, Lost River High School is not currently a Title I school.

What does the Free & Reduced Lunch percentage mean for Lost River High School?

75.4% of students at Lost River High 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
27 Somewhat Bikeable

Powered by Walk Score

Quick Facts NCES CCD (SY 2022-23)

Grades
7th – 12th
Enrollment
240
Student-Teacher Ratio
17.1:1
Teachers (FTE)
14
Free/Reduced Lunch
75.4%
Type
regular
Setting
Remote Rural
County
Klamath County
Chronic Absenteeism (SY 2022-23)
22.9%
4-Year Graduation
80%+

District

Klamath County SD
District Enrollment
7,078
Schools in District
21
Per-Pupil Spending
$15,812
District Rank
#3 of 20

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