At a glance
Reported students
1,585
NCES CCD 2024–25
Teachers (FTE)
81.87
NCES CCD 2024–25
Student–teacher ratio
19.4:1
Calculated; not a class-size measure
Grades served
09–12
NCES preliminary directory 2025–26
School benchmarks
California high enrollment
76th percentile
Compared with 2,195 same-level schools reporting enrollment.
District median enrollment
1,336
Hillsdale High: 1,585 reported students.
State peer staffing position
52nd percentile
19.4:1 reported; state peer median 19.2:1. Ratio is not class size.
Historical enrollment and staffing · CRDC 2021–22
These older figures are kept separate from 2024–25 statistics and benchmarks. Differences between years can reflect changes in enrollment, staffing, or reporting scope.
- Students
- 1,645
- Teachers (FTE)
- 87.6
- Student–teacher ratio
- 18.8:1
What the reported data says about Hillsdale High
Hillsdale High is a public high school serving grades 09–12 in San Mateo. It is one of 8 current school records connected to San Mateo Union High. NCES reports 1,585 students for 2024–25.
Among 2,195 high schools in California with comparable records, this school is larger than the reported median of 416 students. Its enrollment is at approximately the 76th percentile for that peer group. Size describes the campus, not instructional quality.
The reported student–teacher ratio is 19.4:1, close to the California median of 19.2:1 for the same school level. This ratio uses total enrollment and teacher FTE; it is not an average classroom headcount and can be affected by special programs or part-time staffing.
The largest reported race and ethnicity groups are Hispanic or Latino (37.7%) and White (30.9%). English learners represent 14.7% of enrollment. Students served under IDEA represent 12.8%. These figures help families understand who the school serves; they are not rating inputs.
The 2021–22 civil-rights collection reports AP student enrollment, computer science. The school reported 17 AP courses. Program availability changes, so families should confirm the current catalog and participation rules directly with the school.
Questions worth asking Hillsdale High
- 1How do the reported 19.4:1 student–teacher ratio and 81.87 teacher FTE translate into actual class sizes by grade?
- 2Have the reported academic programs changed since the 2021–22 CRDC collection?
- 3What counseling support is available today? The school reported 3.8 counselor FTE in 2021–22.
- 4What meal assistance, transportation, after-school, and family-support services are currently available?
Enrollment needs
- English learners
- 14.7%
- Students with disabilities
- 12.8%
- Free/reduced-price lunch
- 25.2%
- Lunch program
- Yes participating without using any Provision or the CEO
Reported support staff
- Counselors (FTE)
- 3.8
- Nurses (FTE)
- 0
- Psychologists (FTE)
- 1
- Social workers (FTE)
- 0
CRDC 2021–22 full-time-equivalent counts; verify current assignments with the school.
Student demographics
Race and ethnicity share of reported enrollment
- White30.9%
- Hispanic37.7%
- Black1%
- Asian19.7%
- American Indian / Alaska Native0.1%
- Native Hawaiian / Pacific Islander1%
- Multiracial9.3%
Race/ethnicity: NCES CCD 2024–25. English learner and disability context: CRDC 2021–22. Lunch eligibility: NCES CCD 2024–25. Privacy rules can produce missing values.
Programs reported by the school
AP student enrollment
Students enrolled
17 distinct courses reported
Gifted and talented
Not reported as offered
Computer science
Offered
CRDC 2021–22: the AP flag records student enrollment; gifted and computer-science fields describe reported programs/classes. Confirm current courses and eligibility with the school.
Other schools in San Mateo Union High
Start with campuses at the same school level or with similar reported enrollment.
Burlingame High
High · Grades 09–12
1,583 reported students
San Mateo High
High · Grades 09–12
1,557 reported students
Aragon High
High · Grades 09–12
1,658 reported students
Mills High
High · Grades 09–12
1,115 reported students
Capuchino High
High · Grades 09–12
1,061 reported students
Peninsula High (Continuation)
High · Grades 09–12
123 reported students