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William S. Hart Union High School District

21380 Centre Pointe Pkwy.
Santa Clarita, CA 91350-2948
(District boundaries shown in map)
9/
10
Top 20%

Top Rankings

William S. Hart Union High School District ranks among the top 20% of public school district in California for:

Category
Attribute
Overall Rank
Highest overall rank (Top 20%)
Math Proficiency
Highest math proficiency (Top 20%)
Reading/Language Arts Proficiency
Highest reading/language arts proficiency (Top 20%)
Graduation Rate
Highest graduation rate (Top 5%)
Diversity
Most diverse schools (Top 1%)
Community Size
Largest student body (number of students) (Top 1%)
For the 2026 school year, there are 7 public middle schools serving 6,478 students in William S. Hart Union High School District. This district's average middle testing ranking is 9/10, which is in the top 20% of public middle schools in California.
Public Middle Schools in William S. Hart Union High School District have an average math proficiency score of 45% (versus the California public middle school average of 32%), and reading proficiency score of 66% (versus the 46% statewide average).
Minority enrollment is 68% of the student body (majority Hispanic), which is less than the California public middle school average of 78% (majority Hispanic).

Overview

This School District
This State (CA)
# Schools
16 Schools
3,496 Schools
# Students
20,653 Students
1,854,189 Students
# Teachers
941 Teachers
87,800 Teachers
Student-Teacher Ratio
22:1
22:1

Student By Grade

District Rank

William S. Hart Union High School District, which is ranked #267 of all 1,908 school districts in California (based off of combined math and reading proficiency testing data) for the 2022-2023 school year.
The school district's graduation rate of 95% has decreased from 96% over five school years.
This School District
State Average (CA)
#263 out of 1932 school districts
(Top 20%)
45%
34%
68%
47%
44%
29%
95%
87%

Students by Ethnicity:

0.68
0.64
% American Indian
n/a
1%
% Asian
14%
11%
% Hispanic
45%
55%
% Black
4%
5%
% White
32%
22%
% Hawaiian
n/a
n/a
% Two or more races
5%
6%
All Ethnic Groups

District Revenue and Spending

The revenue/student of $21,204 is higher than the state median of $19,974. The school district revenue/student has grown by 56% over four school years.
The school district's spending/student of $15,499 is less than the state median of $18,395. The school district spending/student has stayed relatively flat over four school years.
This School District
This State (CA)
Total Revenue
$438 MM
$116,387 MM
Spending
$320 MM
$107,188 MM
Revenue / Student
$21,204
$19,974
Spending / Student
$15,499
$18,395

Best William S. Hart Union High School District Public Middle Schools (2026)

School
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Rancho Pico Junior High School
(Math: 62% | Reading: 81%)
Rank:
10/
10
Top 10%
26250 West Valencia Blvd.
Stevenson Ranch, CA 91381
(661) 284-3260
Gr: 7-8 | 848 students Student-teacher ratio: 22:1 Minority enrollment: 67%
Rank: #22.
Rio Norte Junior High School
(Math: 53% | Reading: 76%)
Rank:
9/
10
Top 20%
28771 Rio Norte Dr.
Valencia, CA 91354
(661) 295-3700
Gr: 7-8 | 1,110 student Student-teacher ratio: 23:1 Minority enrollment: 61%
Rank: #33.
Arroyo Seco Junior High School
(Math: 49% | Reading: 68%)
Rank:
9/
10
Top 20%
27171 North Vista Delgado Dr.
Valencia, CA 91354
(661) 296-0991
Gr: 7-8 | 1,240 student Student-teacher ratio: 24:1 Minority enrollment: 64%
Rank: #44.
Placerita Junior High School
(Math: 43% | Reading: 64%)
Rank:
8/
10
Top 30%
25015 North Newhall Ave.
Newhall, CA 91321
(661) 259-1551
Gr: 7-8 | 920 students Student-teacher ratio: 19:1 Minority enrollment: 71%
Rank: #55.
Learning Post Academy (Alternative)
Alternative School
(Math: 25-29% | Reading: 65-69%)
Rank:
7/
10
Top 50%
24825 North Newhall Ave.
Newhall, CA 91321
(661) 255-8338
Gr: 7-12 | 363 students Student-teacher ratio: 20:1 Minority enrollment: 53%
Rank: #66.
Sierra Vista Junior High School
(Math: 34% | Reading: 53%)
Rank:
7/
10
Top 50%
19425 West Stillmore St.
Canyon Country, CA 91351
(661) 252-3113
Gr: 7-8 | 974 students Student-teacher ratio: 19:1 Minority enrollment: 75%
Rank: #77.
La Mesa Junior High School
(Math: 31% | Reading: 53%)
Rank:
7/
10
Top 50%
26623 May Way
Canyon Country, CA 91351
(661) 250-0022
Gr: 7-8 | 1,023 student Student-teacher ratio: 19:1 Minority enrollment: 74%

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Quick Facts (2026)

  • District size: 16 schools
  • Grades: K-12
  • Enrollment: 20,653 students
  • Student-Teacher Ratio: 22:1
  • Minority Enrollment: 68%
  • : 95% (Top 5% in CA)
  • : Top 20%
  • : 45% (Top 20%)
  • : 68% (Top 20%)
  • : 44% (Top 30%)
  • Source: National Center for Education Statistics (NCES), CA Dept. of Education

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