Public school · San Mateo Union High

Mills High — Rating & test scores

400 Murchison Drive, Millbrae · 1,115 students · Grades 9–12

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Campus map · © OpenStreetMap

Drawn from OpenStreetMap. Volunteers map it, so a new building may be missing. Buildings with no mapped height are drawn one storey high.

A picture of the campus, not an attendance boundary or a rating.

Schools maintain a closed campus policy. For students’ safety, visitors may enter a campus only with the school’s official permission; this drawing implies no permission to enter.

Scope Score 89

StrongScope Score · 92nd percentile. Higher than 92 in 100 of the 1,498 California public high schools we score.

75 is the typical California school. 100 is the best result in the state. How the score is built

In 2024–25, 97% of the class graduated in four years (270 of 278); across California, 89%.

Source for this line
Source
CDE four-year adjusted cohort graduation rate (ACGR), 2024–25
Students
students who started 9th grade together: 278
Comparison
California: graduates divided by students who started 9th grade together, across 2,281 public schools’ rows (our combination, not CDE’s published state rate; 432,702 of 487,177).

Overview

Is Mills a good high school?

Strong. Mills is higher than most California high schools on test results and attendance.

From spring 2026, the state calls its top two levels “Proficient or Advanced” (formerly “Met or Exceeded”).

Test results, spring 2025

English, Proficient or Advanced9182%
Math, Proficient or Advanced9463%
English, Advanced9251%
Math, Advanced9439%

Showing up, 2024–25

Attendance929 in 100
Mills’s place among California high schools, out of 100San Mateo Union High’s other high schoolsBar colour, from the lowest quarter of schools to the highest

One more thing to know

In grade 11, spring 2026, 80% scored Proficient or Advanced in English (reading and writing) and 63% in math, against 57% and 32% across California.

Each bar is Mills’s place among 1,498 California public high schools we score. Our calculation from California Department of Education records, updated October 15, 2026.

How to read these bars, and their sources

A place counts the schools out of 100 with a lower figure. The dashed line is the middle. Test results are from spring 2025, grade 11, the latest year with a high school Scope Score. That year the state called these levels Met or exceeded and Exceeded. Attendance counts students who missed 10% or more of school days; fewer is better, so a higher place means fewer such students.

Source for the sentence
California’s state tests (CAASPP), California Department of Education, spring 2026. All students tested in grade 11: 247 in English, 252 in math. California: CDE’s grade 11 rows for the whole state combined, weighted by students tested (our calculation; 414,559 in English and 413,523 in math tested).

In its own words

What does Mills say about itself?

We haven’t read Mills’s website yet. Until we do, the school’s own site is the best place to hear it in its own words.

Open mhs.smuhsd.org (opens in a new tab)

Nearby

How does it compare with schools nearby?

2 of the 6 high schools nearby have a higher Scope Score than Mills. Each school is compared with every California high school.

Scope Score

7 high schools within 4.8 miles, highest score first. Under each name is how the school takes students.

  1. BurlingameNeighborhood school · by addressScope Score 9295th
  2. AragonNeighborhood school · by addressScope Score 9094th
  3. MillsScope Score 8992nd
  4. Terra NovaJefferson Union High · by addressScope Score 7969th
  5. San MateoNeighborhood school · by addressScope Score 7967th
  6. South San FranciscoSouth San Francisco Unified · by addressScope Score 7552nd
  7. CapuchinoNeighborhood school · by addressScope Score 7444th
San Mateo Union HighA neighborhood school in another district

A neighborhood school in another district takes students who live in its area. Ask that district about a transfer.

Scope Score from California Department of Education state tests (CAASPP), spring 2025, grade 11. Distance is a straight line from this campus and is not an attendance boundary. See these schools on the map

Scores and family income

Further right, more students are from low-income families. Higher up, more students met or exceeded the standard in English.

75%0%25%50%75%100%

6 of 7 schools are named on the chart. Point at a dot or tap it to read any school.

English results: California Department of Education state tests (CAASPP), spring 2025, grade 11. Low-income is the share of students who qualified for free or reduced-price meals, 2024–25. The chart compares results, not causes.

Schools like it

How does Mills compare with schools like it?

Mills’s Scope Score is 89. 107 California high schools, counting Mills, have a similar share of students from low-income families. Their typical score is 85. Mills’s result is higher than 81 of them.

The five schools with the highest results of the 107

  1. Students from low-income families: 21%

    Scope Score 97Strong · 98th percentile

  2. Students from low-income families: 21%

    Scope Score 97Strong · 98th percentile

  3. Students from low-income families: 18%

    Scope Score 96Strong · 98th percentile

  4. Students from low-income families: 15%

    Scope Score 95Strong · 98th percentile

  5. Students from low-income families: 20%

    Scope Score 95Strong · 97th percentile

107 California public high schools where 14% to 26% of students qualified for free or reduced-price meals in 2024–25. The chart compares results, not causes. Our calculation from California Department of Education records, spring 2025.

How the group is chosen

The group is every California public high school we score where 14% to 26% of students qualified for free or reduced-price meals in 2024–25. That is within 6 points of Mills’s share. The count includes Mills. Typical means the median: half are higher and half are lower. Schools differ in more than family income, and no score is changed for it. Our calculation from California Department of Education records: state tests (CAASPP), spring 2025, and school meal eligibility, 2024–25.

Over time

Have results changed?

Results in both subjects were similar to 2025. English went from 82% to 80% and math stayed at 63%.

Share at the state’s top two test levels, 2017 to 2026

Grade 11. Point at a year, tap it or use the arrow keys to read its figures.

English

No comparable testsNo tests25%50%75%2017201820192022202320242025202679%91%80%MillsMills71%San Mateo Union HighDistrict57%CaliforniaCalifornia

Math

No comparable testsNo tests25%50%75%2017201820192022202320242025202658%75%63%MillsMills52%San Mateo Union HighDistrict32%CaliforniaCalifornia

The lines break where a year has no comparable state test results. Each spring tests a different group of students. San Mateo Union High’s line combines its 7 high schools we score (our calculation). Faint lines are its other schools. Source: California Department of Education, state tests (CAASPP).

Each year’s results

The top two levels were called Met or Exceeded before 2026 and are called Proficient or Advanced now. San Mateo Union High’s figure weights each school by the students it tested.

English, grade 11: share at the top two levels
SpringMillsSan Mateo Union HighCaliforniaTested here
201791%79%60%307
201877%73%56%283
201975%72%57%287
202283%77%55%139
202373%73%55%265
202475%72%56%263
202582%76%57%270
202680%71%57%247
Math, grade 11: share at the top two levels
SpringMillsSan Mateo Union HighCaliforniaTested here
201775%58%32%306
201870%53%31%275
201966%51%32%288
202271%51%27%121
202357%50%27%260
202456%48%28%262
202563%52%30%270
202663%52%32%252

Tests

How did students here do on state tests?

Well above California in both subjects.

English

80%

scored Proficient or Advanced.

143050
San Mateo Union High70%California57%

Math

63%

scored Proficient or Advanced.

20172043
San Mateo Union High51%California32%
MinimalDeveloping levelProficientAdvanced

In grade 11, spring 2026, 80% scored Proficient or Advanced in English and 63% in math, against 57% and 32% across California.

The state published these results on October 15, 2026. What changed across California. Spring 2026, grade 11 combined. Source: California Department of Education, state tests (CAASPP).

How does math compare with English?

In grade 11, spring 2026, math trails English by 17 percentage points in the share who scored Proficient or Advanced, against 25 points across California. The grade 11 cards above give each subject’s share.

All four test levels, with the number of students tested
Share of students tested at each level, spring 2026. The state’s test levels Advanced, Proficient, the Developing level (formerly Nearly met) and Minimal.
StudentsAdvancedProficientDeveloping levelMinimalTested
English, grade 11 · This school50%30%14%6%247
English, grade 11 · California27%30%21%22%414,559
English, grade 11 · San Mateo Union High42%28%15%15%1,992
Math, grade 11 · This school43%20%17%20%252
Math, grade 11 · California16%16%20%48%413,523
Math, grade 11 · San Mateo Union High32%19%17%32%1,957

Spring 2026, grade 11 combined: 247 tested in English, 252 tested in math. California combines the state’s results for the same grades, weighted by students tested (our calculation).

Who goes here

Who goes here?

Asian students are the largest group here, at 48% of students. 105 of 1,134 students missed 10% or more of school days.

Missing school, 2025–26

9in 100

students were chronically absent. That means they missed 10% or more of school days (105 of 1,134 students).

At the average high school in the San Mateo Union High district: 13 in 100. At the average California high school: 22 in 100.

Suspensions: 2.5% of students were suspended at least once (29 of 1,140). Average California high school 2.9%.

Students, 2024–25

1,115

students in grades 9–12.

Asian 48%Hispanic or Latino 20%Filipino 11%White 10%Two or more races 9%

Family income

20%

of students qualified for free or reduced-price meals in 2024–25, 226 of 1,115. California: 63%.

Teachers, 2024–25

69

teachers, with 16 years of experience on average.

7% were in their first year.

84% of teaching positions had the right credential, 2021–22.

English learners

56%

of English learners moved up at least one level on the state’s English test (ELPAC), or stayed at the top, spring 2025 to spring 2026 (25 of 45 students).

San Mateo Union High: 44%. California: 47%.

It counts students moving up the test’s levels, so a student can count here before becoming fluent. Sources: California Department of Education and the California School Dashboard. Each tile names its year.

Full student mix, 2025–26
StudentsHere
Asian48%
Hispanic or Latino20%
Filipino11%
White10%
Two or more races9%
Black or African American—
American Indian or Alaska Native—
Pacific Islander—
Not reported—
Where these figures come from

Attendance and suspensions: California Department of Education, 2025–26. Student mix: the students the state’s attendance file counts, 2025–26; a dash means our records hold no count. English learner progress: California School Dashboard, 2026 . Student count: California Department of Education enrollment, 2024–25. Teachers: California Department of Education staffing files, 2024–25.

Teaching credentials: California’s School Accountability Report Card, 2024–25, measured in 2021–22: 51.8 of 61.3 full-time teaching positions. It counts positions, not individual teachers.

Student groups

How do kids like mine do here?

Low-income and Hispanic or Latino students here scored well above the same groups across California in math.

This schoolThe same group, California
  • Asian123 tested80%California 67%
  • White32 tested66%California 44%
  • Low-income59 tested63%California 23%
  • Hispanic or Latino47 tested36%California 21%

Both groups score below California’s rate for all students statewide. 63% of low-income students scored Proficient or Advanced in math (grade 11, spring 2026), against 23% for the same group across California. Hispanic or Latino students: 36% in math, against 21% for the same group across California. Every group’s English results are in the table below.

Share who scored Proficient or Advanced, grade 11 math, spring 2026. Each group is compared with the same group in the same grades. Source: California Department of Education, state tests (CAASPP).

Every group’s results, with the district

Low-income is the state’s “socioeconomically disadvantaged” group.

Proficient or Advancedgrade 11 · spring 2026
Group and subjectHerevs San Mateo Union Highvs California
Low-income · 59 tested
English66%+2343%+1749%
Math63%+3528%+4023%
Asian · 122 tested in English, 123 in math
English86%−389%+779%
Math80%−585%+1367%
Hispanic or Latino · 46 tested in English, 47 in math
English56%+1442%+749%
Math36%+1818%+1521%
White · 30 tested in English, 32 in math
English83%+380%+1568%
Math66%+957%+2244%

Each gap is to the same group, grades and subject: in San Mateo Union High, and across California. ■ Green: a group that is behind across California does much better here, by 10 points or more and more than twice the margin of error.

Filipino students and students of two or more races: fewer than 30 tested here. No published rate here for Black or African American, American Indian or Alaska Native, Pacific Islander, homeless and military-family students, English learners, students with disabilities and foster youth. That can reflect privacy rules or small numbers; it isn’t evidence of a gap. This table covers groups by income, race or ethnicity, language and disability; girls and boys aren’t split out.

After high school

How many students here graduate, and where do they go next?

97% of students graduated in four years in 2024–25. That compares with 89% across California. 78% were ready for college or career (state measure) in 2024–25. 92% of the class of 2023 enrolled in college within 12 months.

ready for college or career (state measure), 2024–25

78%

Across California: 52%.

of graduates finished the UC/CSU course list, 2024–25

67%

At the average California high school: 56%.

Graduation, college and university records

Preparation · each measure describes a different student group

Graduated in four years

97%

Across California: 89%

2024–25 · 270 of 278 students who started 9th grade together

Ready for college or career (state measure)

78%

Across California: 52%

2024–25 · 217 of 279 students in the state’s measure

Finished the UC/CSU course list

67%

Average California high school: 56%

2024–25 · 180 of 270 graduates finished the UC/CSU course list

Destinations · class of 2023

Where students who finished high school went

92% enrolled in college within 12 months · 279 students who finished high school

  • University of California UC detail ↓70 · 25%
  • California State University CSU detail ↓47 · 17%
  • California community college104 · 37%
  • In-state private20 · 7%
  • Out-of-state, 4-year15 · 5%
  • Out-of-state, 2-year2 · 1%
  • Not enrolled21 · 8%

Source: CDE college-going records, class of 2023. Shares are our arithmetic: each count divided by all high-school completers (graduates and other students who finished), rounded together so they total 100. “Not enrolled” does not describe employment, military service or other routes.

Where the class of 2023 went
93%enrolled in college within a year

279 completers, class of 2023

  • University of California70 (25%)
  • California State University47 (17%)
  • California community college104 (37%)
  • In-state private20 (7%)
  • Out-of-state, 4-year15 (5%)
  • Out-of-state, 2-year2 (1%)
  • Not enrolled21 (8%)

Source: CDE’s college-going rate for the class of 2023 (enrolled in college within 12 months). Shares are our arithmetic: count ÷ completers, rounded together so they total 100. A dash means we have no figure for that row; it isn’t zero.

Where these figures come fromEach measure’s source, student group and definition
Graduated in four years
2024–25 · 270 of 278 students who started 9th grade together. California Department of Education, adjusted cohort graduation records. Comparison is SchoolScope’s combination of graduates and cohort counts across the reference schools, not CDE’s published state rate.
Ready for college or career (state measure)
2024–25 · 217 of 279 students in the state’s measure. California Department of Education, College/Career Indicator (CCI), overall “Prepared” rate, among the students in the indicator’s group. Prepared is CDE’s overall classification, not AP participation or a college admission rate.
Finished the UC/CSU course list
2024–25 · 180 of 270 graduates finished the UC/CSU course list. California Department of Education, A–G completion records (graduates who met the UC/CSU course requirements). Course completion is separate from college enrollment.
Where students who finished high school went
CDE college-going records, class of 2023. College enrollment is counted for 12 months after finishing high school and matched to college records, so this runs about two years behind. A dash is unavailable, not zero.
A closer look: UC and CSU admission recordsApplied, admitted and enrolled, from each university system’s own records

UC’s own records

University of California

Fall 2025 first-year entry · counts, not a school rating

Applied
157
Admitted
136
Enrolled
73

By campus · fall 2025

  • UC DavisApplied 140 · Admitted 43 · Enrolled 7
  • UC San DiegoApplied 137 · Admitted 32 · Enrolled 11
  • UC IrvineApplied 133 · Admitted 27 · Enrolled 8
  • UC BerkeleyApplied 127 · Admitted 17 · Enrolled 8
  • UCLAApplied 127 · Admitted 11 · Enrolled 8
  • UC Santa BarbaraApplied 115 · Admitted 33 · Enrolled 4
  • UC RiversideApplied 104 · Admitted 100 · Enrolled 14
  • UC Santa CruzApplied 104 · Admitted 82 · Enrolled 11
  • UC MercedApplied 52 · Admitted 51 · Enrolled under 3

These records don’t show the school’s effect on admission. A student can apply to several campuses, so campus counts don’t add up to the total. UC blanks counts under 5 applicants or under 3 admits or enrollees; “+” marks a partial count; a dash is unavailable. Source: UC admissions by source school.

Each fall since 2016

  • Fall 2025Applied 157 · Admitted 136 · Enrolled 73
  • Fall 2024Applied 167 · Admitted 116 · Enrolled 61
  • Fall 2023Applied 166 · Admitted 118 · Enrolled 72
  • Fall 2022Applied 166 · Admitted 123 · Enrolled 79
  • Fall 2021Applied 123 · Admitted 84 · Enrolled 46
  • Fall 2020Applied 144 · Admitted 117 · Enrolled 70
  • Fall 2019Applied 163 · Admitted 122 · Enrolled 80
  • Fall 2018Applied 177 · Admitted 123 · Enrolled 80
  • Fall 2017Applied 146 · Admitted 109 · Enrolled 73
  • Fall 2016Applied 156 · Admitted 132 · Enrolled 86

CSU’s own records

California State University

Fall 2025 first-year entry · counts, not a school rating

Applied
159
Admitted
155
Enrolled
25

By campus · falls 2021–2025 added together

Five years in each number, not one. CSU publishes campus counts only as five-year totals, so these aren’t comparable to the fall 2025 figures above or to UC’s one-fall campus bars.

  • San Diego StateApplied 470 · Admitted 138 · Enrolled 16
  • Cal Poly San Luis ObispoApplied 468 · Admitted 99 · Enrolled 11
  • San José StateApplied 457 · Admitted 366 · Enrolled 63
  • San Francisco StateApplied 338 · Admitted 325 · Enrolled 40
  • Cal State Long BeachApplied 313 · Admitted 130 · Enrolled under 6
  • Cal Poly PomonaApplied 242 · Admitted 173 · Enrolled 8
  • Cal State FullertonApplied 170 · Admitted 142 · Enrolled 12
  • Sacramento StateApplied 86 · Admitted 78 · Enrolled 8
  • Chico StateApplied 84 · Admitted 80 · Enrolled 8
  • Cal State East BayApplied 83 · Admitted 73 · Enrolled under 6
  • Cal State Monterey BayApplied 65 · Admitted 63 · Enrolled under 6
  • Cal State LAApplied 57 · Admitted 55 · Enrolled under 6
  • Cal State NorthridgeApplied 56 · Admitted 52 · Enrolled under 6
  • Sonoma StateApplied 51 · Admitted 46 · Enrolled under 6
  • Cal Poly HumboldtApplied 39 · Admitted 35 · Enrolled under 6
  • CSU Channel IslandsApplied 33 · Admitted 33 · Enrolled under 6
  • CSU BakersfieldApplied 29 · Admitted 28 · Enrolled —
  • Cal State San MarcosApplied 28 · Admitted 26 · Enrolled under 6
  • Cal State Dominguez HillsApplied 24 · Admitted 24 · Enrolled —
  • Fresno StateApplied 24 · Admitted 24 · Enrolled under 6
  • Cal State San BernardinoApplied 18 · Admitted 18 · Enrolled —
  • Stanislaus StateApplied 12 · Admitted 11 · Enrolled —
  • Cal Poly Maritime AcademyApplied under 6 · Admitted under 6 · Enrolled —

These records don’t show the school’s effect on admission. A student can apply to several campuses, so campus counts don’t add up to the total. CSU withholds counts under 6; a dash is unavailable. Students who reach CSU from a community college aren’t counted here. Source: CSU High School Success dashboard.

Each fall since 2021

  • Fall 2025Applied 159 · Admitted 155 · Enrolled 25
  • Fall 2024Applied 162 · Admitted 158 · Enrolled 38
  • Fall 2023Applied 183 · Admitted 174 · Enrolled 49
  • Fall 2022Applied 163 · Admitted 158 · Enrolled 34
  • Fall 2021Applied 143 · Admitted 133 · Enrolled 43
Advanced courses on record

AP courses the school is approved to teach

The College Board approved this school to teach 21 AP courses in 6 subjects for 2025–26.

College Board AP Course Audit Ledger · 2025–26. Authorization doesn’t show which courses run or who can take them; ask the school.

  • Math & Computer Science4
  • Sciences6
  • English2
  • History & Social Science4
  • World Languages & Cultures3
  • Arts2
Every approved AP course21 courses in 6 subjects
Math & Computer Science 4
  • Calculus AB
  • Calculus BC
  • Computer Science A
  • Statistics
Sciences 6
  • Biology
  • Chemistry
  • Environmental Science
  • Physics 1
  • Physics C: Electricity and Magnetism
  • Physics C: Mechanics
English 2
  • English Language and Composition
  • English Literature and Composition
History & Social Science 4
  • Human Geography
  • Macroeconomics
  • U.S. Government and Politics
  • United States History
World Languages & Cultures 3
  • Chinese Language and Culture
  • Japanese Language and Culture
  • Spanish Language and Culture
Arts 2
  • 2-D Art and Design
  • Drawing

What other courses and pathways are on record?

College courses in high school (dual enrollment)
309 students took one

2023–24

Students taking a college course for credit while in high school, often through a community college. Federal Civil Rights Data Collection, school-reported.

Family and staff answers

What would families and staff tell you?

Families and staff can answer a short set of questions about Mills. These are not star ratings or reviews.

  1. Staff answers show once 5 people have answered.Until then this page shows no staff answers.
  2. Family answers show once 20 families have answered.Until then this page shows how many have answered.
  3. The questions are about the school, never a person.No question asks about a named teacher or staff member.
  4. Answers are never part of the Scope Score.They sit beside the state’s records and do not change a school’s score.
  5. Staff confirm a work email.Staff answers come only from people who confirmed an email address at San Mateo Union High.

Families

No family answers yet

0 of 20 needed before answers show

  • Does the school tell you how your child is doing, in a way you understand, before report cards arrive?Usually · Sometimes · Rarely
  • When you contact the school with a question, do you hear back within two school days?Usually · Sometimes · Rarely · Haven’t contacted them
  • Can you get school information in the language you read best?Yes · Mostly · No
  • And 4 more questions.

Answer the family questionsResponder en españolHow family answers work

Staff

No staff answers yet

5 answers needed before they show

  • Would you send your own child to this school?Yes · Maybe · No
  • Do you plan to work at this school next year?Yes · Not sure · No
  • Do you have the materials and supplies you need to teach?Usually · Sometimes · Rarely
  • And 5 more questions.

Answer the staff questionsHow staff answers work

Money

Where does the money go?

$29,228 for each student in 2024–25. California’s high schools spent $20,309 for each student. San Mateo Union High’s plan for 2025–26 covers $19 million.

$29,228

for each student at this school, 2024–25
Spent at the school
$19,477
The school’s share of district office costs
$9,751
Of the total, from federal funds
$931
  • Mills$29,228
  • San Mateo Union High high schools$28,825
  • California high schools$20,309

The district and California figures combine their high schools, weighted by enrollment (our calculation, 1,655 California schools). Spending does not show how well money is used. Source: California Department of Education, per-school spending report, 2024–25. Funding records ↓

San Mateo Union High’s yearly plan

$19million

in the district’s plan for 2025–26

$7million

planned for services for English learners, low-income students and foster youth
  • Humanizing Education$10 million
  • Safe & Connected Community$7 million
  • Empowering Educators$2 million

This is the district’s plan. It is not this school’s own budget. Each part of the bar is one goal in the plan, with the money for its actions added up (our calculation). The plan covers $19 million of $244 million in total budgeted spending. Source: San Mateo Union High Local Control and Accountability Plan (LCAP), 2025–26. Read the district’s plan →

The neighborhood

What is the area around Mills like?

These figures are for everyone who lives in ZIP code 94030. They are not figures for the families at Mills.

Typical household income in a year

$163,476

Typical means half are higher and half are lower. The ZIP code is the school’s address, not its attendance area. Source: U.S. Census Bureau, American Community Survey, 2020–2024, ZIP code area 94030.

Typical home value
$1,934,900
People who live in this ZIP code
22,689
Typical age
43.7 years
Adults 25 and older with a four-year college degree
53%

Questions to ask

What should I ask, and when?

Bring these 7 questions to Mills. Confirm anything about applying with the school itself.

On a tour

  1. What extra help do Hispanic students get, and how do you know it’s working?36% of Hispanic students scored Proficient or Advanced in math, grade 11, spring 2026 (47 students tested); the same group across California: 21%
  2. How do you stretch students who are already ahead?50% scored Advanced in English, grade 11, spring 2026 (247 students tested); California: 27%
  3. Which courses and career pathways does the school run, and who can enroll?
  4. How do counselors help students plan for college, training or work?
  5. What support is available when a student falls behind on graduation requirements?

At the office

  1. What time does the day start and end, and is any day shorter?
  2. Is there care before or after school, and what does it cost?

Getting in

How do I get in?

Ask San Mateo Union High which school serves your address.

Where it is

Where is Mills?

Address
400 Murchison Drive, Millbrae 94030Get directions (opens Google Maps in a new tab)
Administrator
Pamela DuszynskiAs the state’s school directory lists it, last updated May 23, 2025.

A school’s place on the map is its address in the state directory. It does not show which homes the school serves. See nearby schools on the map

Short answers to 8 common questions

How do I get in?

Ask San Mateo Union High which school serves your address. See the details ↓

Is Mills a good high school?

Mills High has a Scope Score of 89. It scored higher than 92 in 100 of California’s 1,498 scored public high schools (Strong, 92nd percentile, spring 2025). See the details ↓

How often do students miss school or get suspended?

In 2025–26, 9 in 100 students missed 10% or more of school days, against 13 in 100 at the average high school in the San Mateo Union High district. 2.5% of students (29 of 1,140) were suspended at least once in 2025–26, against 2.9% at the average California high school. See the details ↓

How does math compare with English?

In grade 11, spring 2026, math trails English by 17 percentage points in the share who scored Proficient or Advanced, against 25 points across California. See the details ↓

How do kids like mine do here?

In spring 2026, 66% of low-income students in grade 11 at Mills High in Millbrae scored Proficient or Advanced in English, against 49% for the same group across California. See the details ↓

What could my child study here?

The College Board approved this school to teach 21 AP courses in 6 subjects for 2025–26.

  • 309 students took a college course for credit in 2023–24, by the federal Civil Rights Data Collection

See the details ↓

Where do students go after finishing high school here?

92% of the class of 2023 enrolled in college within 12 months, by CDE’s college-going records. See the details ↓

What should I ask on a visit?

The questions drawn from this page are under Questions to ask, ready to copy. See the details ↓

The full record

Source records

This page is built from 17 sets of records from public data sources. Every figure keeps its source, grades, year and count.

Data updated

October 15, 2026

Record sets on this page
17
Sources
California Department of EducationU.S. Census BureauUniversity of CaliforniaCollege BoardU.S. Department of Education, Office for Civil RightsNational Student Clearinghouse
State test years
2017–2026

Results

Students

After high school

Money and staff

Place, downloads and method

Score factorssource values, index and weights · 2024–25 · ranked #105 of 1,498 California high schools we score · #3 of 7 in San Mateo Union High
Score factors, 2024–25
FactorSchoolIndexWeight
Graduation rate97%6125%
Exceeded standardaverage of English and math45%8222%
Ready for college or career (state measure)78%7120%
Met or exceededaverage of English and math73%7718%
Chronically absent8 in 100675%
Suspension rate2.9% (33 of 1,130)535%
English learners: top level27%675%

Index is where the school's value sits among the California high schools we score, from 0 to 100, where 50 is their average; it is not a percentile. School values are from 2024–25. Chronic absence and suspension are CDE's all-students school rates; the score uses an adjusted version of each that pulls small schools toward the average, so their index can sit nearer 50 than the rate suggests.

School pattern · 2024–25 · What patterns mean

Broad baseMost students here met or exceeded the standard. The Met or exceeded row above gives the figure.
Scope Score by year2018–19 to 2024–25 · each year’s inputs, and the score for each year we could verify

The 2024–25 Scope Score, in the current-formula row below, uses the state’s college-or-career readiness measure, 2024–25. No verified earlier Scope Scores are available here.

Scope Score

School yearScope ScorePercentileRankComparison group
2024–258992#105California high schools · 1,498 schools · current formula

2018–19, 2021–22, 2022–23 and 2023–24 have records on file but no Scope Score we could verify against that year’s source files, so no score is shown for them.

School yearChronic absenceSuspension
2018–196 in 1002.0% (25 of 1,223)
2021–22not on filenot on file
2022–23not on filenot on file
2023–247 in 1004.1% (47 of 1,141)
2024–258 in 1002.9% (33 of 1,130)

Chronic absence and suspension are CDE’s all-students school rates for each year.

No 2019–20 or 2020–21 records in this SchoolScope series
Results by gradeEnglish and math · grade 11 · spring 2026 · % of tested students

What each level means: California's level descriptions.

English · 2025–26 results by grade

Share of students tested, spring 2026
EnglishTestedAdvancedProficientDeveloping levelMinimalProficient or AdvancedCaliforniaDifference
Grade 1124750%30%14%6%80%57%+23

California is CDE’s statewide English row for each grade, counting every student tested there; the comparisons in the chapters combine these rows for their grades, weighted by students tested (our calculation).

Math · 2025–26 results by grade

Share of students tested, spring 2026
MathTestedAdvancedProficientDeveloping levelMinimalProficient or AdvancedCaliforniaDifference
Grade 1125243%20%17%20%63%32%+31

California is CDE’s statewide math row for each grade, counting every student tested there; the comparisons in the chapters combine these rows for their grades, weighted by students tested (our calculation).

A grade the school doesn't teach has no row. “Suppressed” marks a result CDE blanks because fewer than 11 students tested (CDE’s reporting rule); “none tested” marks a grade CDE lists with no students tested; “not on file” marks a result missing from the records we hold. None of them means zero.

Every tested year2017–2026 · rates, tested counts, and each grade

English and math by test year · all tested grades

Year · subjectStudents with scoresTop levelTop two levels
2026 · English24750%80%
2026 · Math25243%63%
2025 · English27051%82%
2025 · Math27039%63%
2024 · English26340%75%
2024 · Math26227%56%
2023 · English26547%73%
2023 · Math26037%57%
2022 · English13949%83%
2022 · Math12148%71%
2019 · English28748%75%
2019 · Math28841%66%
2018 · English28352%77%
2018 · Math27547%70%
2017 · English30765%91%
2017 · Math30651%75%

Each year names its school year end (2026 = 2025–26). “Students with scores” counts each subject on its own, so don’t add the English and math counts together. A dash is unavailable, not zero.

Earlier years · grade and subject

Year · grade · subjectStudents with scoresMet or exceeded
2025 · Grade 11 · English27082%
2025 · Grade 11 · Math27063%
2024 · Grade 11 · English26375%
2024 · Grade 11 · Math26256%
2023 · Grade 11 · English26573%
2023 · Grade 11 · Math26057%
2022 · Grade 11 · English13983%
2022 · Grade 11 · Math12171%
2019 · Grade 11 · English28775%
2019 · Grade 11 · Math28866%
2018 · Grade 11 · English28377%
2018 · Grade 11 · Math27570%
2017 · Grade 11 · English30791%
2017 · Grade 11 · Math30675%

Current 2025–26 grade results appear above. “Students with scores” counts the students tested in that grade, subject and year. A missing result is not zero, and each year’s row is a different group of children.

Science (CAST)schoolwide · spring 2026
Science (CAST)TestedAdvancedProficientDeveloping levelMinimal
Schoolwide24931%28%37%5%

CAST is tested in grades 5 and 8, then once in grade 10, 11, or 12. This row is the school's all-student aggregate. Not part of the Scope Score.

Student groups: test resultsEnglish · spring 2026 · against the same group in the district and California
Group · EnglishTestedProficient or Advancedvs districtvs California
Low-income5966%+23+17
Asian12286%−3+7
Hispanic or Latino4656%+14+7
Attendance and suspensionsState records · this school and each student group · 2018–19 and 2025–26

CDE’s all-students school rates for 2024–25 and 2025–26; the change is the difference between the two rates as printed.

Year-over-year school rates
Chronic absenteeism2024–25 · 8 in 100 → 2025–26 · 9 in 100 · +1 in 100
Suspension rate2024–25 · 2.9% (33 of 1,130) → 2025–26 · 2.5% (29 of 1,140) · −0.4 percentage points
Group2018–192025–26Change
Female8 in 10010 in 100+2 in 100
Male4 in 1008 in 100+4 in 100
Asian2 in 1004 in 100+2 in 100
Filipino3 in 1006 in 100+3 in 100
Hispanic or Latino10 in 10022 in 100+12 in 100
Pacific Islander3 of 35——
Two or more races11 of 758 in 100—
White3 of 2413 in 100—
Students with disabilities19 in 10020 of 90—
English learners2 of 7111 of 59—
Low-income10 in 10020 in 100+10 in 100
All students6 in 1009 in 100+3 in 100

Two reported school years only; no intervening-year result is implied. Where fewer than 100 students were counted, the cell shows the count and no change is printed. Source: CDE school-level chronic absenteeism by student group.

Graduation and readinessstate records · each rate for its own year and class of students
MeasureSource record
This school · CCI overall PreparedCDE College/Career Indicator · CCI source year 2025 · all students · all students in the current four-year graduation cohort, plus only Prepared fifth-year graduates from the prior cohort. Overall CCI Prepared rate 78% · numerator 217 students classified Prepared · denominator 279 CCI students.
California · CCI overall PreparedCDE statewide CCI cohort · CCI source year 2025 · all students · overall Prepared rate 52% · numerator 257,567 students classified Prepared · denominator 497,814 CCI students.
AP pathway among CCI Prepared studentsCDE College/Career Indicator · CCI source year 2025 · all students · AP pathway rate 83% · AP-pathway numerator 181 · denominator 217 (CCI Prepared students). This measure uses Prepared students as its denominator, not the whole CCI cohort; it is not an AP exam-taking rate or a count of AP courses offered. That cohort includes all students in the current four-year graduation cohort plus only Prepared fifth-year graduates from the prior cohort. In 2025 the pathway accepts two qualifying AP exams, two qualifying AP courses, or a combination of one of each in different subjects.

CDE's overall Prepared rate is the college-readiness factor in the Scope Score (20% of the high school score). The school rate is 217 of 279 CCI students, not the AP-only pathway or A–G completion rate. The California figure is CDE's statewide CCI student cohort, not an average of SchoolScope's comparable high schools or the SchoolScope school-rank pool.

Graduation rate
97%
AP route, among those ready for college or career
83%
2025 CDE CCI cohort · AP courses, exams, or both; share of students ready for college or career (CDE’s “Prepared”), not course offerings
Finished the UC/CSU course list (A–G)
67%
A–G are the 15 courses (across 7 subjects) required for UC/CSU eligibility
College-going rate
92%

These source periods and populations differ: graduation uses an adjusted cohort, while A–G completion and college-going use separately reported groups. The rates are shown individually, without a shared performance tier.

UC admissions, universitywidefall 2016–2025 · applied, admitted, enrolled, mean GPA · summed across CEEB codes
YearAppliedAdmittedEnrolledMean GPA (applied)Mean GPA (admitted)Mean GPA (enrolled)
2025157136733.923.994.08
2024167116613.873.964.06
2023166118723.894.024.02
2022166123793.994.084.16
202112384463.813.944.01
2020144117703.783.873.91
2019163122803.793.934.03
2018177123803.854.014.08
2017146109733.763.893.92
2016156132863.823.883.95

Source: UC admissions by source school. Dated fall first-year UC applicants, admitted students, and enrollees. GPA is each group's mean weighted, capped high-school GPA for 10th/11th-grade college-preparatory courses. SchoolScope leaves GPA unavailable when several CEEB codes contribute rather than combining their means. UC blanks counts under 5 applicants or under 3 admits or enrollees, shown here as “under 5” or “under 3”; — means unavailable, and a reported zero remains zero. A + marks a partial SchoolScope sum of observed counts, not a complete total; missing contributions may be zero. No admit rate is computed here. Complete, matching counts can support a historical descriptive rate, but do not establish a school's effect or predict individual chances. Series shown from 2016.

UC admissions by campuslatest falls on file · each campus counted separately
CampusYearAppliedAdmittedEnrolled
Berkeley2025127178
Berkeley2024139136
Berkeley2023123129
Berkeley20221222521
Berkeley2021842015
Davis2025140437
Davis20241375016
Davis20231334619
Davis20221353711
Davis202194357
Irvine2025133278
Irvine2024139228
Irvine2023135134
Irvine2022146184
Irvine20211027under 3
Los Angeles2025127118
Los Angeles2024128109
Los Angeles202312494
Los Angeles2022139115
Los Angeles2021904under 3
Merced20255251under 3
Merced20243936under 3
Merced202332294
Merced202236354
Merced202134324
Riverside202510410014
Riverside202481629
Riverside2023907415
Riverside2022947413
Riverside202171468
San Diego20251373211
San Diego2024139224
San Diego2023127177
San Diego2022136286
San Diego20218415under 3
Santa Barbara2025115334
Santa Barbara2024113313
Santa Barbara202311016under 3
Santa Barbara2022119233
Santa Barbara202182186
Santa Cruz20251048211
Santa Cruz202487505
Santa Cruz202399579
Santa Cruz2022974612
Santa Cruz20216022under 3
Universitywide202515713673
Universitywide202416711661
Universitywide202316611872
Universitywide202216612379
Universitywide20211238446

Source: UC admissions by source school. Dated fall first-year UC applicants, admitted students, and enrollees. Campus totals are not interchangeable with Universitywide; students can apply to several campuses. Universitywide is separately reported; never derive it by adding campus rows. Universitywide applicant and admit counts are unduplicated. UC blanks counts under 5 applicants or under 3 admits or enrollees, shown here as “under 5” or “under 3”; — means unavailable, and a reported zero remains zero. A + marks a partial SchoolScope sum of observed counts, not a complete total; missing contributions may be zero. No admit rate is computed here; these records do not establish a school's effect or predict individual chances.

AP course catalog2025–26 · College Board course authorizations
SubjectAuthorization recorded for
2-D Art and Designthis school
Biologythis school
Calculus ABthis school
Calculus BCthis school
Chemistrythis school
Chinese Language and Culturethis school
Computer Science Athis school
Drawingthis school
English Language and Compositionthis school
English Literature and Compositionthis school
Environmental Sciencethis school
Human Geographythis school
Japanese Language and Culturethis school
Macroeconomicsthis school
Physics 1this school
Physics C: Electricity and Magnetismthis school
Physics C: Mechanicsthis school
Spanish Language and Culturethis school
Statisticsthis school
U.S. Government and Politicsthis school
United States Historythis school

Authorization ≠ a section running this year — the Ledger records what the school may teach, not seat counts.

Advanced coursework, federal snapshot2023–24 · Civil Rights Data Collection · dated historical snapshot
MeasureThis school
AP offeredoffered
AP course count20
AP enrollment (male/female)446
IB participationnot reported
Dual enrollmentoffered · 309 enrolled
Algebra I in grade 8not reported
Calculus sections4
Physics sections7
Chemistry sections11
Reported male/female enrollment (CRDC)1,119

These counts aren’t part of the Scope Score. “Not reported” means the federal record has no value for that item; it isn’t a zero. Enrollment counts add the male and female students the survey reports.

College destinationsclass of 2023 · state college-going records, 12 months after graduation
DestinationCompleters% (derived)
University of California7025%
California State University4717%
California community college10437%
In-state private207%
Out-of-state, 4-year155%
Out-of-state, 2-year21%
Not enrolled218%

279 students who finished high school, class of 2023 · state-reported college-going rate 93% · % column is computed by SchoolScope (count ÷ all who finished high school; CDE calls them completers), not a CDE-native rate · an unavailable or suppressed cell is marked as missing; a reported zero remains distinct · source: CDE 12-mo CGR, 2023 cohort (the newest published), National Student Clearinghouse match — a different, older vintage than the fall 2025 UC admissions rows above.

Fundingschool and district spending, from state and federal finance records · each row names its fiscal year and measure

Per-pupil spending

District · current expense$19,450 per pupil

NCES F-33 · FY 2020–21 (2021) · fall district membership: 9,203 pupils

California · selected district mean$14,491 per pupil

NCES F-33 · FY 2020–21 (2021) · SchoolScope’s unweighted mean across 818 selected California district finance records

School-level federal expenditures$405 per pupil

CDE ESSA · school-attributed per-pupil record · FY 2024–25 (2025) · source denominator: 1,115

Central federal expenditures attributed here$526 per pupil

CDE ESSA · central expenditures attributed to this school · FY 2024–25 (2025) · source denominator: 1,115

District current expense · FY 2024–25$28,924 per ADA

CDE SACS Current Expense of Education · district fiscal year ending 2025 · average daily attendance denominator

These figures are not directly comparable: school ESSA attributed spending and NCES district current expense use different measures and populations. Their fiscal years are labeled above.

How the California mean was selected

SchoolScope starts with its selected California finance records, not every NCES California district. For FY 2020–21, it calculates an unweighted mean of NCES F-33 current expense per pupil. District records contribute once, regardless of enrollment. The calculation keeps records with positive per-pupil current expense, enrollment over 100, CCD agency type 1, and a recorded district name; it excludes names ending in County Office of Education, Department of Education, or Superintendent of Schools. This is a SchoolScope calculation, not a state-published spending average.

Selected General Fund operating costs · FY 2024–⁠25 · SchoolScope calculation
Instruction 52%Instruction support 12%Student services 14%Administration 6%Buildings & maintenance 11%Other 5%
The arithmetic behind these shares · FY 2024–25
GroupDollarsShare, to two decimalsPrinted
Instruction$122,240,65851.45%52%
Instruction support$28,977,38912.20%12%
Student services$33,909,91614.27%14%
Administration$14,864,5066.26%6%
Buildings & maintenance$27,074,22011.39%11%
Other$10,544,1844.44%5%
Total$237,610,873100.00%100%

These shares are our arithmetic: each group’s dollars divided by the $237,610,873 total of the groups shown, rounded to whole percents by largest remainder so they add up to 100. Dollar amounts are rounded to the nearest dollar, so they can differ from the total by a dollar. SchoolScope groups district-level CDE SACS UserGL actuals from Fund 01, using operating objects 1000–5999 and excluding retiree benefits, food and community services, facilities acquisition, other outgo, and nonagency goals. These shares use that filtered total; they do not exactly break down CDE's official current expense per ADA above. The school-level ESSA figure uses a separate source.

NCES F-33 district fiscal-year history, 2017–⁠2021; latest district record shown: 2021
2021$19,450 per pupil
2020$19,203 per pupil
2019$19,357 per pupil
2018$17,001 per pupil
2017$16,893 per pupil

Source: NCES F-33 · Full district breakdown →

Staffing recordsstate teacher credential-and-placement and district salary records · each for its own year

Additional workforce records

Properly assigned intern credential holders2.8%

CDE 2024–25 SARC, Teacher Preparation and Placement table; measured school year 2021–22. Share of reported school teaching-position full-time equivalents assigned to properly assigned intern credential holders. A reported 0.0% is shown; unavailable rates are omitted. This is a position share, not a count of current teachers or of emergency permits.

The surrounding ZIP codeCensus Bureau survey, 2020–2024 · ZIP 94030 · not the school’s students
American Community Survey 5-year estimates · 2020–2024 · ZIP 94030 area
MeasureEstimate
Median household income$163,476
Bachelor's degree or higher (adults 25+)53%
ZIP-area population22,689
Median age43.7 years

Source: U.S. Census Bureau, American Community Survey, 2020–2024 5-year estimates. Median household income covers the past 12 months and is reported in 2024 inflation-adjusted dollars. Bachelor's degree or higher uses adults age 25 and over as its population. A dash is unavailable, not zero; a reported zero remains zero. ZIP-area figures do not establish the school's attendance area or describe its enrolled students. These figures are not part of the Scope Score. See all schools in ZIP code 94030 →

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Data sources: public data sources, including the California Department of Education · state tests (CAASPP) 2025–26 · Scope Score from 2024–25 results, compared across 1,498 high schools · attendance and suspensions by student group from 2018–19 and 2025–26 · district finance for the year each row names · Census survey (ACS) 2020–2024 · UC fall first-year source records — UC blanks counts under 5 applicants or 3 admits or enrollees; “+” marks a partial count; the all-campus total is reported separately · AP courses the College Board approved, 2025–26 (approved to teach, not enrollment) · federal civil rights data (CRDC) 2023–24, a past snapshot · state college-going records, class of 2023, matched to National Student Clearinghouse enrollment · Data updated October 15, 2026

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