Hillsdale High

Grades 9–12 Public District: San Mateo Union High

3115 Del Monte St., San Mateo, CA 94403 Map

Math (met standard)
43%
+12 state 32% · 2025-26
English (met standard)
68%
+10 state 57% · 2025-26
Science (met standard)
48%
+15 state 33% · 2025-26
Low income
25%
free or reduced-price lunch
Students
1,585
2024-25
Students per teacher
19.4
2024-25

Test score trends

Share of students who met or exceeded the state standard each year.

Latest results by grade

Grade Math English Science
Grade 11 43% state 32% · 2025-26 68% state 57% · 2025-26 —
All grades 43% state 32% · 2025-26 68% state 57% · 2025-26 48% state 33% · 2025-26
Results by year (all grades)
School year Math English Science
2025-26 43% state 32% 68% state 57% 48% state 33%
2024-25 42% state 31% 72% state 57% 39% state 28%
2023-24 37% state 28% 65% state 56% 40% state 27%
2022-23 40% state 27% 67% state 55% 46% state 27%
2021-22 44% state 27% 71% state 55% 39% state 27%
2018-19 50% state 32% 71% state 57% —
2017-18 51% state 31% 74% state 56% —
2016-17 58% state 32% 74% state 60% —
2015-16 54% state 32% 78% state 59% —
2014-15 46% state 30% 62% state 56% —

Graduation & college

4-year graduation rate
95%
state 88% · 2025-26
Graduates meeting UC/CSU (A–G)
76%
state 55% · 2025-26
College-going rate
85%
state 66% · 2022-23

Graduation rate: students who earned a regular diploma within four years. UC/CSU: share of graduates who completed the A–G courses required by the University of California and California State University. College-going: share of high school completers who enrolled in any college within 12 months.

Students

Race and ethnicity, 2024-25

Year-by-year history is loaded from the NCES Common Core of Data (2017-18 onward).

Nearby schools

Subject percentages show the share of students who met or exceeded the state standard.

Pick to compare
Aragon High
Grades 9–12 · San Mateo Union High
1.6 mi
65%
+33 vs state
81%
+24 vs state
63%
+30 vs state
Average of math, English and science: 69% in 2022-23 → 70% in 2025-26 17% 1,658 Asian 33%
Gateway Center
Grades 6–12 Alternative · San Mateo County Office of Education
1.8 mi
0%
−32 vs state · 2015-16
7%
−52 vs state · 2015-16
— Not enough years of data 64% 11 Hispanic 82%
Hillcrest at Youth Services Center
Grades 5–12 Alternative · San Mateo County Office of Education
1.9 mi
0%
−32 vs state · 2018-19
0%
0%
−26 vs state · 2018-19
Average of math, English and science: 0% in 2023-24 → 0% in 2025-26 81% 16 Hispanic 81%
Carlmont High
Grades 9–12 · Sequoia Union High
2.3 mi
75%
+43 vs state
87%
+30 vs state
75%
+37 vs state
Average of math, English and science: 80% in 2022-23 → 79% in 2025-26 9% 2,360 White 41%
Design Tech High
Grades 9–12 Charter · Design Tech High District
2.7 mi
59%
+27 vs state
81%
+24 vs state
64%
+31 vs state
9% Average of math, English and science: 59% in 2022-23 → 68% in 2025-26 7% 567 White 41%
San Mateo County Special Education
Grades K–12 Special education · San Mateo County Office of Education
2.7 mi
17%
15%
— Not enough years of data 39% 44 Hispanic 43%
San Mateo High
Grades 9–12 · San Mateo Union High
3.2 mi
48%
+16 vs state
62%
+5 vs state
44%
+11 vs state
4% Average of math, English and science: 47% in 2022-23 → 51% in 2025-26 38% 1,557 Hispanic 48%
Burlingame High
Grades 9–12 · San Mateo Union High
3.9 mi
61%
+29 vs state
76%
+19 vs state
57%
+25 vs state
7% Average of math, English and science: 72% in 2022-23 → 65% in 2025-26 13% 1,583 White 41%
Redwood High
Grades 9–12 Alternative · Sequoia Union High
4.5 mi
0%
−32 vs state
12%
−46 vs state
0%
−38 vs state
Average of math, English and science: 6% in 2022-23 → 4% in 2025-26 63% 175 Hispanic 88%