Enrollment
242
High
DISTRICT 360 · STATE 630
SCHOOL COMMUNITY·KLAMATH COUNTY SD·NCES 410702000511
Lost River High School
23330 Hwy 50, Merrill, OR 97633 · (541) 798-5666 · Klamath County
GRADES 07–12HIGH43-RURALTITLE IREGULAR SCHOOL242 STUDENTS
Student : Teacher
16.1:1
15 FTE teachers
DISTRICT 14.5:1 · STATE 19.8:1
Free / Reduced Lunch
92%
222 students
DISTRICT 93% · STATE 76%
Community
0
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 7 | 39 | 16% |
| Grade 8 | 42 | 17% |
| Grade 9 | 39 | 16% |
| Grade 10 | 36 | 15% |
| Grade 11 | 47 | 19% |
| Grade 12 | 39 | 16% |
Student demographics
52%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 54% · STATE 59% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Test scores
OSAS 2024-25 . % ProficientEnglish Language Arts
58.5%
OR avg 43.0% . +10.8pp since 2023
Math
34.7%
OR avg 31.8% . +5.3pp since 2023
What this means: On the OSAS, Oregon's statewide test, about 59 of every 100 students at this school read and write at grade level and about 35 of 100 do math at grade level. Across all Oregon schools, those numbers are about 43 and 32. Reading and writing scores are up about 11 points since 2023, while math scores are up about 5 points.
OSAS results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 58.5% | 34.7% |
| 2023-24 | 47.7% | 29.4% |
% Proficient, all students and all tested grades.
Source: OSAS. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
38.2%
composite math + reading, all grades
Predicted
27.0%
based on OR schools with similar FRL share
Beats by
+11.2pp
above demographic expectation
What this means: About 38% of students here test proficient in math and reading, compared with the roughly 27% typical for Oregon schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Oregon's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Where Lost River High School ranks
Among high schools| Measure | This school | In Oregon | In Klamath County |
|---|---|---|---|
| State test proficiency ranked highest first | 38.2% | #43 of 177 | #3 of 7 |
| Math proficiency ranked highest first | 34.7% | #23 of 194 | #2 of 7 |
| Reading proficiency ranked highest first | 58.5% | #36 of 201 | #2 of 7 |
| Enrollment ranked largest first | 242 | #159 of 257 | #4 of 8 |
| Students per teacher ranked fewest first | 16.1:1 | #30 of 171 | N/A |
| Diversity index ranked most diverse first | 52.5% | #68 of 171 | N/A |
| Enrollment change since 2017-18 ranked fastest growth first | +12.0% | #23 of 67 | N/A |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list.
7-year change
SY 2017-18 vs SY 2024-25Enrollment
242
+26 (+12%) vs 2017
Student : Teacher
16.1:1
was 16.6:1
% White
45%
was 41%
% Hispanic
52%
was 57%
% Black
0%
was 0%
% Asian
0%
was 0%
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free or reduced lunch |
|---|---|---|---|---|
| 2024-25 | 242 | 15 | 16.1:1 | 92% (222) |
| 2023-24 | 240 | 14.5 | 16.6:1 | 75% (181) |
| 2022-23 | 228 | 14 | 16.3:1 | 74% (168) |
| 2017-18 | 216 | 13 | 16.6:1 | 75% (161) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Lost River High School.
About Lost River High School
Lost River High School is a small high school based in Merrill, Oregon. The school counts 242 students across grades 7 through 12. The typical figure for high schools in Oregon is about 630 students.
Lost River High School is one school in a 21-school district, Klamath County SD, which enrolls 6,774 students.
Hispanic students make up a majority at Lost River High School, at 52%. Other students are 45% White and 2% multiracial. That is higher than the 14% Hispanic share among all Klamath County residents. Pick two students at random and there is a 52% chance they belong to different racial or ethnic groups; that figure is the school's diversity index.
Its 15 full-time-equivalent teachers give the school a ratio of 16.1:1. The school has fewer students per teacher than the 19.8:1 average for high schools in Oregon. The school's lunch program data list 92% of students as eligible for free or reduced-price meals.
Predicted from its free or reduced-price lunch share, Lost River High School would score about 27.0%. It scores 38.2%, 11.2 points above that figure.
Among Klamath County residents, the median household income is $58,830, roughly 23% of adults have a four-year degree or more, and the share of residents below the poverty line is 11%. Lost River High School is one of 30 public schools in the county.
Tulelake Basin Elementary is the closest public school, about 4.4 miles away in a straight line. In all, 3 other public schools sit within five miles of Lost River High School. Lost River High School places 2nd of 8 on proficiency among the closest schools that report scores.
Lost River High School is in rural territory far from an urban area, a location NCES labels Rural: Remote.
Enrollment has grown by 26 students since 2017-18, to 242. Hispanic students went from 57% of enrollment in 2017-18 to 52% in 2024-25.
Families, students, and staff can use this page to discuss school safety, transportation, and start times at Lost River High School. Alumni can share how the school prepared them.
Klamath County at a glance
View full county profilePopulation
70,247
Census ACS
Median income
$58,830
Household, ACS
Bachelor's+
23%
Adults 25+
Poverty rate
11%
Below federal line
Schools in county
30
9,474 students
Quick facts
Related schools
Other schools in Klamath County SD
- Henley High SchoolHigh · 720 students
- Mazama High SchoolHigh · 690 students
- Peterson Elementary SchoolElementary · 573 students
- Ferguson Elementary SchoolElementary · 524 students
- Shasta Elementary SchoolElementary · 505 students
- Henley Elementary SchoolElementary · 493 students
Nearby schools
- Tulelake Basin Elementary4.4 mi · 270
- Malin Elementary School4.7 mi · 126
- Tulelake High4.8 mi · 209
- Merrill Elementary School5.2 mi · 184
- Henley Elementary School13.5 mi · 493
- Henley High School13.5 mi · 720
Frequently asked questions
About Lost River High SchoolHow many students attend Lost River High School?
Lost River High School enrolls approximately 242 students in grades 07-12.
Is Lost River High School an elementary, middle, or high school?
Lost River High School is a high school covering grades 07-12.
What is the student-teacher ratio at Lost River High School?
The student-to-teacher ratio at Lost River High School is approximately 16.1:1 (15 FTE teachers).
What is the racial breakdown of students at Lost River High School?
At Lost River High School, the student body is approximately 45% White, 52% Hispanic, 2% Two or more.
Who oversees Lost River High School?
Lost River High School is overseen by Klamath County SD in Klamath County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.