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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 · Merrill, OR

A Klamath County Sd high school where students score 17 points above what's typical for similar communities.

23330 Hwy 50, Merrill, OR 97633

  • Math 35% vs OR 32% (2025)
  • Reading 59% vs OR 43% (2025)
  • 80%+ 4-year graduation

Academics

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, district spending per student, and attendance.
View breakdown
Student-Teacher Ratio17.1:1
District spending per student$15,812
Chronic Absenteeism22.9%

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

How we calculate scores →

2025 OSAS proficiency

Most recent published year. School vs. OR average.

Math Proficiency35%(2025 OSAS)
School
State
32%(2025 OSAS)
ELA Proficiency59%(2025 OSAS)
School
State
43%(2025 OSAS)

Trend

↑ Recovering

Proficiency declined earlier in the 17-year record (2009–2025), then recovered 12 points since 2020, reaching 47% in 2025.

Show all 15 years
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
35%
ELA
59%

Multi-year averages used by the rating model: math 44% (multi-year average, 2009-2025) · reading/ELA 60% (multi-year average, 2009-2025)

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

Based on 30 test records from OR state assessments and EdFacts (NCES).

Equity & diversity

Shown separately, not included in the overall score

Free/reduced lunch

75.4%

Students qualifying for federal meal assistance

How we rate schools

A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.

See how we rate

The neighborhood

Where Lost River High School sits, and what the surrounding area looks like.

Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries.

Getting around & local context

  • Walk 3Car-Dependent
  • Bike 27Somewhat Bikeable
  • County Safety: Elevated964/100K

Powered byWalk Score

FBI Uniform Crime Reporting · 2024 · county context, not school-level safety or attendance eligibility. Source details

Source period: 2024. A newer release may be available.

Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)

Median income

$61,094

Median home value

$211,400

Median rent

$829/mo

College educated

13.2%

Homeownership

61.3%

Poverty rate

10.6%

ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 97633; this is area context, not an attendance boundary.

Programs & students

Programs & Offerings

Athletics7sports offered
3 boys'·4 girls'·10 teams (incl. JV)·CRDC via Urban Institute · SY 2021–22
Advanced STEM Courses3of 5 advanced subjects offered
Algebra II, Advanced Math, Calculus, Chemistry, Physics·CRDC via Urban Institute · SY 2021–22
Gifted & Talented ProgramAvailable
This school offers a gifted and talented program for qualifying students.·CRDC via Urban Institute · SY 2021–22

Compare nearby

Nearby same-level schools

4 from a 5-mile search; district fallback available

SchoolScoreGradesDistanceEnrollmentCompare
Pedro Valley SchoolPrivate · tuitionNot rated6–114.5 mi8Compare →
Tulelake HighEnrollment path unverified6.97–124.8 mi186Compare →
Bonanza Junior/senior High SchoolEnrollment path unverified5.77–12Not available256Compare →
Chiloquin High SchoolEnrollment path unverified6.67–12Not available177Compare →

Distance is proximity only; it is not attendance eligibility.

Private · tuition: Potential private option; tuition and admission requirements have not been verified.

Enrollment path unverified: Potential public school; its attendance or application path has not been classified.

Klamath County Sd

Schools in district
21
Rank in district
#3 of 20
District spending per student
$15,812NCES F-33 · FY 2023 · This annual source is three years behind the current year.
District child poverty rate
15.0%Census SAIPE · 2024

Lost River High School is listed in Klamath County SD; a district label does not verify attendance for an address.

About Lost River High School

Lost River High School is a public high school in Merrill, OR, part of Klamath County Sd, serving approximately 240 students in grades 7th-12th with a 17.1:1 student-teacher ratio. It holds a MySchoolScout rating of 8.8 out of 10 and ranks #99 of 1,226 schools in OR. State assessment records show 44% math proficiency (multi-year average, 2009-2025) and 60% reading/ELA proficiency (multi-year average, 2009-2025).

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.

School factsNCES Common Core of Data (CCD) (SY 2023–24)

Grades
7th – 12th
Enrollment
240
Student-Teacher Ratio
17.1:1
Teachers (FTE)
14
Type
regular
Setting
Remote Rural
County
Klamath County
Chronic Absenteeism (SY 2022-23)
22.9%
4-Year Graduation
80%+
Area population (ZIP 97633)
1,456
Area median age
27.2
About this school's data

Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.

School directory (enrollment, grades, staff, contact)
NCES Common Core of Data (CCD) · SY 2023–24 · Medium confidence
  • Source period: SY 2023–24. A newer release may be available.
MySchoolScout rating and rank
MySchoolScout ranking model · Low confidence
  • Vintage not available. Do not use this measure alone.
  • Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
Math proficiency
State department of education · 2025 OSAS · Low confidence
  • Vintage not available. Do not use this measure alone.
  • Available for part of the eligible units; results may not represent the full area.
  • Derived from source records rather than read directly from one field.
Reading/ELA proficiency
State department of education · 2025 OSAS · Low confidence
  • Vintage not available. Do not use this measure alone.
  • Available for part of the eligible units; results may not represent the full area.
  • Derived from source records rather than read directly from one field.
Student progress (growth)
NCES EdFacts · Mixed source periods · Low confidence
  • Vintage not available. Do not use this measure alone.
  • Available for part of the eligible units; results may not represent the full area.
  • Derived as the fitted year-over-year slope of proficiency from multi-year assessment records.
Neighborhood (income, housing, education)
U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
  • Older source: ACS 2019–2023 5-year estimates. Use as historical context.
  • Reported for the ZCTA for ZIP 97633; this does not measure the attendance area.
Programs (AP/IB, athletics, gifted)
CRDC via Urban Institute · SY 2021–22 · Medium confidence
  • Available for part of the eligible units; results may not represent the full area.
  • Source period: SY 2021–22. A newer release may be available.

Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2025; directory SY 2023–24

About our data · How we calculate scores

Related reading

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