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SCHOOL COMMUNITY·ATASCADERO UNIFIED·NCES 060330000247

Atascadero High

1 High School Hill, Atascadero, CA 93422 · (805) 462-4300 · San Luis Obispo County
GRADES 09–12HIGH23-SUBURBTITLE IREGULAR SCHOOL1,157 STUDENTS
C+
allk12 Grade
Scored higher than 40% of California public high schools
  • B-Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • DBeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
  • A-Three-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
1,157
High
DISTRICT 457 · STATE 838
Student : Teacher
19.6:1
59 FTE teachers
DISTRICT 21.4:1 · STATE 18.2:1
Free / Reduced Lunch
45%
520 students
DISTRICT 51% · 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 930226%
Grade 1028124%
Grade 1128124%
Grade 1229325%
Student demographics
53%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 56% · STATE 62% · US 70%
White
69860%
DISTRICT 58% · STATE 20% · US 43%
Hispanic
36732%
DISTRICT 31% · STATE 56% · US 30%
Black
171%
DISTRICT 1% · STATE 5% · US 15%
Asian
212%
DISTRICT 2% · STATE 12% · US 6%
Two+
434%
DISTRICT 7% · STATE 6% · US 5%
Native American
71%
DISTRICT 1% · STATE 0% · US 1%
Pacific Islander
30%
DISTRICT 0% · 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
60452%
Female
55248%

Discussions

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Test scores

CAASPP 2024-25 . % met or exceeded standard
English Language Arts
60.5%
CA avg 49.1% . -10.5pp since 2014
Math
31.3%
CA avg 37.7% . -5.7pp since 2014

What this means: On the CAASPP, California's statewide test, about 60 of every 100 students at this school read and write at grade level and about 31 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 11 points since 2014, while math scores are down about 6 points.

Performance levels, 2024-25

SubjectStandard ExceededStandard MetStandard Nearly MetStandard Not Met
English Language Arts33.3%27.2%17.3%22.2%
Math14.4%16.9%22.6%46.1%
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
2024-2560.5%31.3%
2023-2450.6%23.0%
2022-2355.3%24.8%
2021-2247.2%26.9%
2018-1950.5%30.3%
2017-1860.8%28.7%
2016-1758.0%30.3%
2015-1663.0%36.0%
2014-1571.0%37.0%
% 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
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
41.3%
composite math + reading, all grades
Predicted
53.2%
based on CA schools with similar FRL share
Beats by
-11.9pp
below demographic expectation

What this means: About 41% of students here test proficient in math and reading, compared with the roughly 53% typical for California 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 California'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 →

Schools most like Atascadero High

Atascadero High's state test result (41.3% proficient) is higher than 2 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
Atascadero High this school1,15744.9%41.3%
Petaluma High
Petaluma
1,19340.9%43.5%
Casa Roble Fundamental High
Orangevale
1,15048.1%31.2%
Analy High
Sebastopol
1,47340.9%49.1%
Tehachapi High
Tehachapi
1,26040.0%35.1%
Santana High
Santee
1,62146.0%52.6%
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 Atascadero High ranks

Among high schools
MeasureThis schoolIn CaliforniaIn San Luis Obispo County
State test proficiency
ranked highest first
41.3%#495 of 1,052#7 of 10
Math proficiency
ranked highest first
31.3%#410 of 1,056
▲ 116
#6 of 10
no change
Reading proficiency
ranked highest first
60.5%#466 of 1,056
▲ 173
#8 of 10
▼ 1
3-year test score change
ranked biggest gain first
+8.8pp#174 of 1,044#3 of 10
Enrollment
ranked largest first
1,157#706 of 2,093#4 of 22
Students per teacher
ranked fewest first
19.6:1#490 of 1,352#5 of 9
Diversity index
ranked most diverse first
53.3%#601 of 1,351#6 of 9
Free and reduced lunch
ranked highest share first
44.9%#1,226 of 1,575#10 of 13
Enrollment change since 2017-18
ranked steepest decline first
-12.9%#357 of 802#1 of 6
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
1,157
-50 (-4%) vs 2020
-9% since 1990-91, when it was 1,275
Student : Teacher
19.6:1
was 19.8:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-251,15759.219.6:145% (520)
2023-241,11460.418.4:144% (491)
2022-231,1736119.2:146% (545)
2020-211,2076119.8:131% (370)
2017-181,32862.921.1:134% (445)
2015-161,3316420.8:129% (380)
2010-111,493N/AN/A30% (441)
2000-011,7557922.2:111% (187)
1990-911,2755423.6:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Atascadero High.

Since 2017-18: students down 13% (1,328 to 1,157); teachers down 6% (62.9 to 59.2).

About Atascadero High

The public high school Atascadero High is located in Atascadero, California. Students in grades 9 through 12 attend, and enrollment is 1,157 students. The school's enrollment is 38% above the 838 average for high schools in California.

Atascadero Unified includes 12 schools. Together they enroll 4,355 students.

At 60%, White students outnumber all other groups at Atascadero High combined. Smaller groups are 32% Hispanic and 4% multiracial. County-wide, 69% of San Luis Obispo County residents are White. The chance that two students picked at random at Atascadero High belong to different racial or ethnic groups, known as the diversity index, is 53%.

The school reported 59.2 full-time-equivalent teachers in 2024-25 and a ratio of 19.6:1. For comparison, high schools in California average 18.2:1. Free or reduced-price lunch eligibility is 45%. Across public schools in San Luis Obispo County, the average is 54%.

Measured against California public high schools, Atascadero High receives a C+. The grade weighs proficiency most heavily, then how results compare with what the school's low-income share predicts, then the three-year change.

When test results are adjusted for free or reduced-price lunch eligibility, Atascadero High is 11.9 points below its prediction. Actual: 41.3%. Predicted: 53.2%.

Atascadero High is located in San Luis Obispo County, where median household income is about $97,446, roughly 40% of adults have a four-year degree or more, and about 6% of residents live below the federal poverty line. Federal data list 83 public schools in San Luis Obispo County, with a combined enrollment of about 33,339.

Fine Arts Academy is the closest public school, about 0.6 miles away in a straight line. Atascadero High is one of several public schools in the area, with at least 8 others within five miles. The school's 41.3% average proficiency ranks 5th among 7 nearby schools.

Its NCES locale code is Suburb: Small: the school is in a suburban area outside a principal city, within an urbanized area with a population under 100,000.

The student count in 2024-25 was 1,157, 4% below the 1,207 of 2020-21.

Topics for discussion here include sports tryouts, band and choir, and theater. Alumni can share how the school prepared them.

San Luis Obispo County at a glance

View full county profile
Population
281,555
Census ACS
Median income
$97,446
Household, ACS
Bachelor's+
40%
Adults 25+
Poverty rate
6%
Below federal line
Schools in county
83
33,339 students

Quick facts

School name
Atascadero High
District
Atascadero Unified
Address
1 High School Hill, Atascadero, CA 93422
Phone
(805) 462-4300
County
San Luis Obispo County
Level
High
Grade range
09–12
Total enrollment
1,157
Teachers (FTE)
59
Student–teacher ratio
19.6:1
Free and reduced lunch
520 (45%)
Locale
23-Suburb: Small
NCES ID
060330000247
Charter school
No
Virtual school
No

Related schools

Other schools in Atascadero Unified
Other schools in Atascadero
Nearby schools

Frequently asked questions

About Atascadero High
How large is Atascadero High?
Atascadero High enrolls approximately 1,157 students in grades 09-12.
What grades does Atascadero High serve?
Atascadero High serves grades 09-12.
How many teachers does Atascadero High have?
Atascadero High employs 59 FTE teachers, for a student-to-teacher ratio of 19.6:1.
What is the student diversity at Atascadero High?
Student demographics at Atascadero High are roughly 60% White, 32% Hispanic, 1% Black, 2% Asian, 4% Two or more.
What district is Atascadero High in?
Atascadero High is part of Atascadero Unified.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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