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SCHOOL COMMUNITY·LASSEN UNION HIGH·NCES 062106002532

Lassen High

1110 Main St., Susanville, CA 96130 · (530) 257-2141 · Lassen County
GRADES 09–12HIGH33-TOWNREGULAR SCHOOL816 STUDENTS
C-
allk12 Grade
Scored higher than 23% of California public high schools
  • C+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • FBeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
  • AThree-year trend Change in reading and math proficiency over the last three test years.

Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded California public high schools

Enrollment
816
High
DISTRICT 279 · STATE 838
Student : Teacher
20.3:1
40 FTE teachers
DISTRICT 10.4:1 · STATE 18.2:1
Free / Reduced Lunch
34%
279 students
DISTRICT 50% · STATE 65%
Community
6
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

GradeStudentsShare
Grade 922127%
Grade 1019624%
Grade 1122227%
Grade 1217722%
Student demographics
62%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 62% · STATE 62% · US 70%
White
44154%
DISTRICT 54% · STATE 20% · US 43%
Hispanic
19724%
DISTRICT 24% · STATE 56% · US 30%
Black
101%
DISTRICT 1% · STATE 5% · US 15%
Asian
152%
DISTRICT 2% · STATE 12% · US 6%
Two+
11214%
DISTRICT 14% · STATE 6% · US 5%
Native American
182%
DISTRICT 2% · STATE 0% · US 1%
Pacific Islander
172%
DISTRICT 2% · STATE 0% · US 0%
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
Male
40349%
Female
40750%

Discussions

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Test scores

CAASPP 2024-25 . % met or exceeded standard
English Language Arts
51.3%
CA avg 49.1% . -2.7pp since 2014
Math
17.0%
CA avg 37.7% . -9.0pp since 2014

What this means: On the CAASPP, California's statewide test, about 51 of every 100 students at this school read and write at grade level and about 17 of 100 do math at grade level. Across all California schools, those numbers are about 49 and 38. Reading and writing scores are down about 3 points since 2014, while math scores are down about 9 points.

Performance levels, 2024-25

SubjectStandard ExceededStandard MetStandard Nearly MetStandard Not Met
English Language Arts16.2%35.0%22.3%26.4%
Math5.2%11.9%32.0%51.0%
Share of tested students at each CAASPP level. Each student counts in one level, so a row adds to about 100%.

CAASPP results by year

School yearEnglish Language ArtsMath
2024-2551.3%17.0%
2023-2451.2%16.1%
2022-2335.2%14.8%
2021-2231.4%11.1%
2020-2146.9%13.5%
2018-1956.7%31.6%
2017-1857.1%19.6%
2016-1764.9%26.8%
2015-1659.0%31.0%
2014-1554.0%26.0%
% met or exceeded standard, all students and all tested grades.
Source: CAASPP. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
UNDERPERFORMING
Bottom 10% of CA schools after controlling for student poverty
Actual proficiency
33.9%
composite math + reading, all grades
Predicted
59.5%
based on CA schools with similar FRL share
Beats by
-25.6pp
below demographic expectation

What this means: About 34% of students here test proficient in math and reading, below the roughly 60% typical for California schools with a similar share of low-income students. BeatsExpectations compares each school with others at the same poverty level, not by raw scores, so a school lands here when its results trail those comparable schools, which is not the same as having low scores. A higher-scoring school can still fall in this tier if similar schools score higher still.

BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

Schools most like Lassen High

Lassen High's state test result (33.9% proficient) is higher than 0 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
Lassen High this school81634.2%33.9%
Argonaut High
Jackson
59334.4%37.4%
Sonora High
Sonora
88038.3%47.1%
Placer High
Auburn
1,26529.9%49.4%
El Dorado High
Placerville
1,13538.0%46.7%
La Jolla High
La Jolla
1,17430.2%62.7%
Matched among California high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.

Where Lassen High ranks

Among high schools
MeasureThis schoolIn CaliforniaIn Lassen County
State test proficiency
ranked highest first
33.9%#687 of 1,052N/A
Math proficiency
ranked highest first
17.0%#771 of 1,056
▼ 46
N/A
Reading proficiency
ranked highest first
51.3%#679 of 1,056
▼ 53
N/A
3-year test score change
ranked biggest gain first
+12.9pp#67 of 1,044N/A
Enrollment
ranked largest first
816#830 of 2,093#1 of 6
Students per teacher
ranked fewest first
20.3:1#581 of 1,352N/A
Diversity index
ranked most diverse first
62.4%#334 of 1,351N/A
Free and reduced lunch
ranked highest share first
34.2%#1,367 of 1,575N/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. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
816
+26 (+3%) vs 2020
-15% since 1990-91, when it was 956
Student : Teacher
20.3:1
was 21.4:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2581640.320.3:134% (279)
2023-2480540.719.8:137% (297)
2022-2382040.820.1:133% (267)
2020-217903721.4:135% (274)
2017-1881634.823.4:134% (274)
2015-168293722.4:130% (252)
2010-11905N/AN/A22% (203)
2000-011,1475520.9:15% (59)
1990-919564222.8:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Lassen High.

Since 2017-18: students unchanged (816 to 816); teachers up 16% (34.8 to 40.3).

About Lassen High

Lassen High is a mid-sized high school in Susanville, California. The school serves grades 9 through 12. Enrollment is 816 students.

Lassen Union High is made up of 3 schools with 836 students in all.

At Lassen High, 54% of students are White. The next largest groups are 24% Hispanic, 14% multiracial, 2% Native American, and 2% Pacific Islander. In Lassen County overall, about 67% of residents are White. On a 0 to 100 scale, the school's diversity index is 62, compared with 70 nationally.

Lassen High has 40.3 full-time-equivalent teachers on staff and a student-to-teacher ratio of 20.3:1. The school's 20.3:1 compares with an average of 18.2:1 for high schools in California. The school has 34% of students eligible for free or reduced-price lunch. That rate is below the 56% average among public schools in Lassen County.

Lassen High holds a C- allk12 Grade, placing it above 23% of California public high schools.

When test results are adjusted for free or reduced-price lunch eligibility, Lassen High ranks in the bottom 10% of California schools. It scores 33.9%; the prediction is 59.5%.

Census data for Lassen County show median household income comes to about $67,403, about 13% of adults have at least a bachelor's degree, and roughly 10% of residents are in poverty. There are 25 public schools in the county, enrolling about 3,757, Lassen High among them.

The closest school to Lassen High is Credence High, located less than a tenth of a mile away. The count of other public schools within five miles is at least 8. Its average proficiency rate of 33.9% is below the 35.4% average for nearby schools.

Lassen High has an NCES locale of Town: Remote.

In 2024-25, the school enrolled 816, up from 790 in 2020-21. Students per teacher dropped from 21.4 in 2020-21 to 20.3 in 2024-25.

On allk12, people connected to Lassen High can post about athletics, class schedules, and weather closures. Current and former families are welcome to add their experience.

Lassen County at a glance

View full county profile
Population
30,356
Census ACS
Median income
$67,403
Household, ACS
Bachelor's+
13%
Adults 25+
Poverty rate
10%
Below federal line
Schools in county
25
3,757 students

Quick facts

School name
Lassen High
District
Lassen Union High
Address
1110 Main St., Susanville, CA 96130
Phone
(530) 257-2141
County
Lassen County
Level
High
Grade range
09–12
Total enrollment
816
Teachers (FTE)
40
Student–teacher ratio
20.3:1
Free and reduced lunch
279 (34%)
Locale
33-Town: Remote
NCES ID
062106002532
Charter school
No
Virtual school
No

Related schools

Other schools in Lassen Union High
Other schools in Susanville
Nearby schools

Frequently asked questions

About Lassen High
How large is Lassen High?
Lassen High enrolls approximately 816 students in grades 09-12.
Is Lassen High an elementary, middle, or high school?
Lassen High is a high school covering grades 09-12.
How many teachers does Lassen High have?
Lassen High employs 40 FTE teachers, for a student-to-teacher ratio of 20.3:1.
What is the student diversity at Lassen High?
Student demographics at Lassen High are roughly 54% White, 24% Hispanic, 1% Black, 2% Asian, 14% Two or more.
What district is Lassen High in?
Lassen High is part of Lassen Union High.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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