Hillsdale High
🇺🇸 Official data · 2025San Mateo, California 94403 · San Mateo Union High
#154 of 1,343 high schools in California
#4242 of 16,910 nationally
About Hillsdale High
Hillsdale High is a public high located in San Mateo, in the San Mateo Union High school district of California, United States. It caters for Grades 9–12. In 2025 it enrolled 1,585 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 66.2 out of 100, placing it in the top 25% of high schools in United States and 154th of 1,343 ranked high schools in California. Its strongest component is community advantage (fewer free/reduced-price lunch) (86th percentile), and its weakest is students per teacher (19th percentile).
Other published figures: enrollment 1,585.
There are 19 schools in San Mateo; Hillsdale High ranks 6th of 19 scored schools there.
Success Index (US) breakdown
Each component is a percentile against high schools across United States.
- Math proficiency (30%)50%
- Reading proficiency (30%)71%
- Community advantage (fewer free/reduced-price lunch) (25%)25.2%
- Students per teacher (15%)19.6
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Hillsdale High by the official sources.
- Enrollment
- 1,585
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 25.2%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 19.6
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 71%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 50%
- Share of tested students proficient or above (all students, all grades).
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Schools near Hillsdale High
Closest schools by straight-line distance, with their Success Index (US).
Abbott Middle
San Mateo · Public middle · Grades 6–8
721 students · 296 m away
Laurel Elementary
San Mateo · Public elementary · Grades K–5
469 students · 728 m away
Beresford Elementary
San Mateo · Public elementary · Grades K–5
218 students · 796 m away
Meadow Heights Elementary
San Mateo · Public elementary · Grades K–5
238 students · 803 m away
Cipriani Elementary
Belmont · Public elementary · Grades K–5
471 students · 1.9 km away
George Hall Elementary
San Mateo · Public elementary · Grades K–5
370 students · 2.0 km away
Borel Middle
San Mateo · Public middle · Grades 6–8
903 students · 2.1 km away
Ralston Intermediate
Belmont · Public middle · Grades 6–8
1,082 students · 2.3 km away
Fiesta Gardens International Elementary
San Mateo · Public elementary · Grades K–5
418 students · 2.4 km away
Aragon High
San Mateo · Public high · Grades 9–12
1,658 students · 2.5 km away
Similar schools
Public high schools in California with a comparable Enrollment.
Buena High
Ventura · Public high · Grades 9–12
1,585 students
Red Bluff High
Red Bluff · Public high · Grades 9–12
1,586 students
Maria Carrillo High
Santa Rosa · Public high · Grades 9–12
1,584 students
John C. Kimball High
Tracy · Public high · Grades 9–12
1,587 students
Burlingame High
Burlingame · Public high · Grades 9–12
1,583 students
Manuel Dominguez High
Compton · Public high · Grades 9–12
1,582 students
Frequently asked questions
Is Hillsdale High a good school?
Hillsdale High has a Success Index (US) of 66.2 out of 100 (Top 25% of high schools in United States) and ranks #154 of 1,343 in California. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Hillsdale High rank in California?
Hillsdale High ranks #154 of 1,343 high schools in California and #4242 of 16,910 nationally on the Success Index (US) (2025 data).
How many students attend Hillsdale High?
Hillsdale High had 1,585 students in 2025.
Is Hillsdale High a elementary school or a high school?
Hillsdale High is classified as a high covering Grades 9–12. It is a public school.
What other schools are near Hillsdale High?
There are 10 schools within 15 km of Hillsdale High; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.