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Hillsdale High School

3115 Del Monte Street, San Mateo, CA 94403View on map

  • Public
  • San Mateo
  • 411 seniors
  • 1,517 students

Hillsdale High School is a public high school in San Mateo (San Mateo Union High) with 411 seniors. In fall 2025, 74% of its 155 University of California applicants were admitted, compared with a county median of 76%. Its students applied most often to UC Davis (UCD), UC San Diego (UCSD), and UC Santa Barbara (UCSB). 70% of the class of 2023 completed the A–G courses UC requires.

Year

UC admit rate

74%

114 of 155 applicants, fall 2025

County median 76%

Seniors admitted to a UC

28%

114 of 411 seniors

County median 34%

Seniors who applied to UC

38%

155 of 411 seniors

County median 42%

UC Los Angeles (UCLA) admit rate

8.7%

9 of 103 applicants, fall 2025

CA applicants 9.6%

UC Berkeley (Cal) admit rate

14%

15 of 109 applicants, fall 2025

CA applicants 13%

Campus by campus, fall 2025

The share of this school's applicants each campus admitted, beside the campus's rate for everyone else. Hardest campus first.

University of California

Hillsdale High School applicants did better than all California applicants at 1 of 9 campuses, about the same at 4 and worse at 4.

  • Los AngelesAbout the same

    9%

    9 of 103 admitted

    This school9%All CA10%

    Admitted students' average GPA 4.30 (all applicants 4.06)

  • BerkeleyAbout the same

    14%

    15 of 109 admitted

    This school14%All CA13%

    Admitted students' average GPA 4.25 (all applicants 4.05)

  • Irvine4 pts lower

    18%

    20 of 109 admitted

    This school18%All CA22%

    Admitted students' average GPA 4.22 (all applicants 4.02)

  • San Diego6 pts lower

    19%

    22 of 115 admitted

    This school19%All CA25%

    Admitted students' average GPA 4.24 (all applicants 4.03)

  • Santa Barbara8 pts lower

    25%

    28 of 114 admitted

    This school25%All CA32%

    Admitted students' average GPA 4.27 (all applicants 4.00)

  • Davis5 pts lower

    32%

    38 of 120 admitted

    This school32%All CA37%

    Admitted students' average GPA 4.20 (all applicants 3.99)

  • Santa CruzAbout the same

    73%

    63 of 86 admitted

    This school73%All CA71%

    Admitted students' average GPA 4.09 (all applicants 3.92)

  • Riverside11 pts higher

    98%

    61 of 62 admitted

    This school98%All CA87%

    Admitted students' average GPA 4.00 (all applicants 3.98)

  • MercedAbout the same

    98%

    50 of 51 admitted

    This school98%All CA96%

    Admitted students' average GPA 3.91 (all applicants 3.90)

Fall 2025. A student admitted to several campuses counts once at each one. All CA is the campus’s admit rate that fall for applicants from every California high school. Within 3 points counts as about the same. GPA is the UC-calculated GPA (weighted, capped).

California State University

Hillsdale High School applicants did better than the campus overall at 0 of 5 campuses, about the same at 3 and worse at 2.

  • San Luis Obispo11 pts lower

    19%

    24 of 126 admitted

    This school19%Overall30%

  • San Diego4 pts lower

    30%

    38 of 126 admitted

    This school30%Overall34%

  • San JoseAbout the same

    80%

    79 of 99 admitted

    This school80%Overall80%

  • ChicoAbout the same

    91%

    32 of 35 admitted

    This school91%Overall94%

  • San FranciscoAbout the same

    93%

    51 of 55 admitted

    This school93%Overall96%

Fall 2025. A student admitted to several campuses counts once at each one. Overall is the campus’s admit rate for all its applicants, from federal IPEDS data (fall 2023, the latest published). Within 3 points counts as about the same.

Where graduates go

Class of 2023 (395 graduates), the latest published by fall 2025, within 12 months of graduating.

Any college

85%

337 of 395 graduates

UC or CSU

26%

101 graduates

Community college

38%

151 graduates

DestinationGraduatesShare
UC349%
CSU6717%
CA private college256%
Out of state6015%
Community college15138%
Not enrolled5815%
Enrolled in college33785%
Total395100%

How each student group compares

Compare college-going across student groups

  • Gender: Female, Male
  • Race & ethnicity: Hispanic or Latino, White, Asian, Two or more races, Filipino
  • Student need: Low-income, English learners, Students with disabilities
See the full report

Advanced Placement

20

AP courses offered

2023–24 school year · US Dept. of Education Civil Rights Data Collection

49

AP class sections

Counts every section taught, so it is larger than the number of different AP courses.

38% of students are in AP courses

2024–25 school year · California School Accountability Report Card

63%

of graduating seniors passed at least two AP exams or courses

244 of 388 graduates

A score of 3 or higher on exams or a C- or better in courses. Not comparable with the exam-only share.

2025–26 school year · California Department of Education (College/Career Indicator)

37%

of graduating seniors scored 3 or higher on at least two AP exams

151 of 411 graduates

2023–24 school year · California Department of Education (College/Career Indicator)

Subject areas

  • Computer science: 3 classes
  • English: 12 classes
  • Fine and performing arts: 3 classes
  • Foreign language: 4 classes
  • Mathematics: 6 classes
  • Science: 11 classes
  • Social science: 10 classes

Academic context

State test (CAASPP), juniors tested in 2026, and the share of low-income students. A–G is the class of 2023. The tick is the county median.

  • Juniors meeting the English standard 68%County median 62%
  • Juniors meeting the math standard 43%County median 37%
  • Juniors exceeding the English standard 37%County median 29%
  • Juniors exceeding the math standard 24%County median 19%
  • Low-income students 23%County median 35%
  • Graduates completing courses 70%County median 66%

Across California

Year
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Other schools in San Mateo Union High and nearby