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SCHOOL COMMUNITY·JEFFERSON UNION HIGH·NCES 061893001427

Thornton High

115 First Ave., Daly City, CA 94014 · (650) 550-7840 · San Mateo County
GRADES 09–12HIGH21-SUBURBTITLE IALTERNATIVE EDUCATION SCHOOL89 STUDENTS
·
allk12 Grade
Not graded

Schools serving specialized populations are not graded, because state test results are not a fair comparison for them. How grades work

Enrollment
89
High
DISTRICT 730 · STATE 838
Student : Teacher
11.6:1
8 FTE teachers
DISTRICT 17.6:1 · STATE 18.2:1
Free / Reduced Lunch
53%
47 students
DISTRICT 34% · STATE 65%
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

GradeStudentsShare
Grade 922%
Grade 101416%
Grade 112528%
Grade 124854%
Student demographics
57%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 69% · STATE 62% · US 70%
White
1011%
DISTRICT 15% · STATE 20% · US 43%
Hispanic
5562%
DISTRICT 36% · STATE 56% · US 30%
Black
22%
DISTRICT 1% · STATE 5% · US 15%
Asian
1416%
DISTRICT 39% · STATE 12% · US 6%
Two+
67%
DISTRICT 7% · STATE 6% · US 5%
Pacific Islander
11%
DISTRICT 1% · 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
4854%
Female
4045%

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Test scores

CAASPP 2024-25 . % met or exceeded standard
English Language Arts
14.7%
own-school result
Math
2.7%
own-school result
State assessment results for this school reflect a specialized student population. The figures above are the school's own reported scores; they are not directly comparable to state averages or to general-enrollment schools, so the usual state-average comparison line is suppressed here.

Performance levels, 2024-25

SubjectStandard ExceededStandard MetStandard Nearly MetStandard Not Met
English Language Arts0.0%14.7%5.9%79.4%
Math0.0%2.7%5.4%91.9%
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
2024-2514.7%2.7%
2023-2431.6%0.0%
2022-2313.9%4.8%
2021-228.3%9.1%
2018-197.5%0.0%
2017-186.0%0.0%
2016-1718.0%1.9%
2015-167.0%0.0%
2014-1510.0%2.0%
% met or exceeded standard, all students and all tested grades.
Source: CAASPP. All students, all grades. See all years and grades →

BeatsExpectations

Not computed for this school
BeatsExpectations is not computed for specialized-population schools (schools for the deaf or blind, therapeutic and behavioral-health placements, juvenile-justice and alternative-education settings, and similar). State ELA/Math proficiency rates are not a comparable metric for these populations, so a demographically-adjusted residual against general-enrollment peers would be misleading. About the methodology →

Where Thornton High ranks

Among high schools
MeasureThis schoolIn CaliforniaIn San Mateo County
Enrollment
ranked largest first
89#1,612 of 2,093#29 of 35
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
89
-15 (-14%) vs 2020
-52% since 2000-01, when it was 186
Student : Teacher
11.6:1
was 10.4:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-25897.711.6:153% (47)
2023-241165.720.3:156% (65)
2022-23776.711.5:140% (31)
2020-211041010.4:145% (47)
2017-1814311.212.8:152% (74)
2015-161211111.0:153% (64)
2010-11230N/AN/A3% (7)
2000-01186726.6:10% (0)
Source: NCES Common Core of Data. Rows are the federal collections on file for Thornton High.

Since 2017-18: students down 38% (143 to 89); teachers down 31% (11.2 to 7.7).

About Thornton High

Daly City, California, is home to Thornton High, a very small high school. The school runs grades 9 through 12 and enrolls 89 students. High schools in California have about 838 students on average; enrollment here is 89% lower.

District-wide, Jefferson Union High has 5 schools and 3,650 students.

The student body at Thornton High is 62% Hispanic. Beyond that, enrollment is 16% Asian, 11% White, 7% multiracial, and 2% Black. The Hispanic share of the county population is lower, at 25%. On a 0 to 100 scale, the school's diversity index is 57, compared with 70 nationally.

Thornton High reports a ratio of 11.6 students per teacher, from 7.7 full-time-equivalent teachers. The school's 11.6:1 compares with an average of 18.2:1 for high schools in California. Lunch program data show 53% of students are eligible for free or reduced-price meals. The gap from the 34% average for public schools in San Mateo County is 19 points.

The school is in San Mateo County, where median household income comes to about $158,855, roughly 54% of adults have a four-year degree or more, and the share of residents below the poverty line is 4%. San Mateo County counts 176 public schools with about 82,403 students.

Thomas R. Pollicita Middle is about 0.3 miles away, making it the nearest public school. There are at least 8 more public schools inside five miles.

By NCES locale, the school is Suburb: Large, or in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.

Over 4 years, enrollment decreased by 15 students, from 104 to 89. Federal data show the ratio rising from 10.4:1 to 11.6:1.

People can post here about special education services, counseling, and support programs and other school topics. Members of the school community can share what they know.

San Mateo County at a glance

View full county profile
Population
742,340
Census ACS
Median income
$158,855
Household, ACS
Bachelor's+
54%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
176
82,403 students

Quick facts

School name
Thornton High
District
Jefferson Union High
Address
115 First Ave., Daly City, CA 94014
Phone
(650) 550-7840
County
San Mateo County
Level
High
Grade range
09–12
Total enrollment
89
Teachers (FTE)
8
Student–teacher ratio
11.6:1
Free and reduced lunch
47 (53%)
Locale
21-Suburb: Large
NCES ID
061893001427
Charter school
No
Virtual school
No

Related schools

Other schools in Jefferson Union High
Other schools in Daly City
Other Thornton High schools

One other US public school is named Thornton High. Thornton High is the 2nd largest of the 2.

Nearby schools

Frequently asked questions

About Thornton High
What is the total enrollment at Thornton High?
Thornton High enrolls approximately 89 students in grades 09-12.
What grades does Thornton High serve?
Thornton High serves grades 09-12.
How many students per teacher at Thornton High?
Approximately 11.6:1 students per teacher at Thornton High.
What is the student diversity at Thornton High?
Student demographics at Thornton High are roughly 11% White, 62% Hispanic, 2% Black, 16% Asian, 7% Two or more.
What district is Thornton High in?
Thornton High is part of Jefferson Union High.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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