Hillsdale High
#52
Best ACT in California High Schools
1,629
Students
17.6:1
S:T Ratio
School Snapshot
Key metrics at a glanceAvg SAT Scoreout of 1600
1,330
A
Excellent
Avg ACT Scoreout of 36
29
A
Excellent
AP Coursescourses offered
17
A
Excellent
AP Enrollmentof students
19%
C
Average
Student-Teacher Ratiostudents per teacher
18:1
B
Average
Graduation Rate
91%
A+
Excellent
This Week at Hillsdale High – April 28, 2026
219 students practicing on Varsity Tutors
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School Details
Address
3115 Del Monte St., San Mateo, CA 94403
Phone
(650)558-2699
District
San Mateo Union High School District
Academic Calendar
2025-2026
Important dates, holidays, and school events
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