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Mountain View-Los Altos Union High

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At a glance

319^thof 1,530 California districts▲ 1

Better than 79% of California districts

High 3Grades 9-12

1299 Bryant Ave.
Mountain View, CA 94040-4527·(650) 940-4650·All California district rankings →

Statewide performance 2018–2026

2026: better than 79.2% of districts

Schools

4,435

Students

5-star schools

Top rankedMountain View High31^st of 2,135 California high schools

▲

Biggest riser

Mountain View High up 39 spots statewide this year

Compare California districts →See the top-ranked California schools →

Summary:

The three high schools in Mountain View-Los Altos Union High serve grades 9–12: Mountain View High has 2,187 students, Los Altos High has 2,170, and Alta Vista High has 78. In 2025–2026, the two larger schools were above state proficiency rates in English language arts (ELA), math, and science, while Alta Vista was below the state in all three. The largest takeaway is how much results vary among schools: the highest-to-lowest proficiency gap was 50 points in ELA, 68 in math, and 63 in science.

Mountain View led in every subject, with proficiency of 88% in ELA, 73% in math, and 70% in science; Los Altos followed at 77%, 66%, and 67%. Alta Vista was lowest, at 38% in ELA, 4% in math, and 8% in science. Compared with the state rate for the matching grade, Mountain View was ahead by 31, 41, and 38 points, respectively; Los Altos was ahead by 20, 35, and 34 points, while Alta Vista was behind by 19, 28, and 25 points. SchoolDigger ranked Mountain View 31st, Los Altos 83rd, and Alta Vista 1,589th statewide in 2025–2026.

Recent changes were mixed, rather than consistent across schools and subjects. From 2024–2025 to 2025–2026, Mountain View rose in all three subjects—by 8 points in ELA, 4 in math, and 4 in science. Los Altos gained 10 points in science but fell by 1 in ELA and 2 in math; Alta Vista gained 3 points in ELA and declined by 1 in math and 8 in science. The larger schools have similar student–teacher ratios (18.4 at Mountain View and 18.1 at Los Altos), while Alta Vista’s is 13.7. Their 2024–2025 free/reduced lunch eligible measures were 13% at Mountain View, 17% at Los Altos, and 50% at Alta Vista; these figures describe differences among schools, not what explains their results. Alta Vista’s small enrollment is worth keeping in mind when interpreting its percentages.

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Ranking:

E Elementary M Middle H High A Alternative P Private

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Finance All

School													Students/Teachers											Ranking (2026)				Ranking (2025)				CAST Science (2026)		Smarter Balanced Assessments English Language Arts/Literacy (2026)		Smarter Balanced Assessments Mathematics (2026)		Per Pupil Expenditures (2025)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/reduced lunch (2024-25)	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2026)	Statewide Rank (2026)	State Percentile (2026)	SchoolDigger Rating (2026)	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	Rank Change from Previous Year	CAST Science 12th Grade	CAST Science All Grades	Smarter Balanced Assessments English Language Arts/Literacy 11th Grade	Smarter Balanced Assessments English Language Arts/Literacy All Grades	Smarter Balanced Assessments Mathematics 11th Grade	Smarter Balanced Assessments Mathematics All Grades	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Los Altos High	Public	9-12	201 Almond Ave.	Los Altos	94022	Santa Clara County	Mountain View-Los Altos Union High	No	(n/a)	No	(n/a)	(650) 940-8812	2,170	120	18.1	16.5%	630 (29.0%)	13 (0.6%)	607 (28.0%)	660 (30.4%)	4 (0.2%)	9 (0.4%)	226 (10.4%)	95.2	83^rd of 2135 public high schools	96.1%		95.8	83^rd of 2162 public high schools	96.2%		66.9	66.9	77.3	77.3	66.5	66.5	$48,017	$47,146	$871
Mountain View High	Public	9-12	3535 Truman Ave.	Mountain View	94040	Santa Clara County	Mountain View-Los Altos Union High	No	(n/a)	No	(n/a)	(650) 940-4602	2,187	118	18.4	12.7%	729 (33.3%)	31 (1.4%)	469 (21.4%)	661 (30.2%)	1 (0.0%)	11 (0.5%)	264 (12.1%)	97.8	31^st of 2135 public high schools	98.5%		96.5	70^th of 2162 public high schools	96.8%	39	70.3	70.3	88.3	88.3	72.6	72.6	$47,017	$46,142	$875
Alta Vista High	Public	9-12	1325 Bryant Ave.	Mountain View	94040	Santa Clara County	Mountain View-Los Altos Union High	No	(n/a)	No	(n/a)	(650) 691-2433	78	6	13.7	50.0%	6 (7.7%)	2 (2.6%)	51 (65.4%)	7 (9.0%)	0 (0.0%)	6 (7.7%)	5 (6.4%)	24.4	1588^th of 2135 public high schools	25.6%		28.1	1523^rd of 2162 public high schools	29.6%	65	7.7	7.7	37.9	37.9	4.4	4.4	$73,593	$66,614	$6,979

Districts nearby

District	Distance	# of Schools	Statewide Rank
Los Altos Elementary	0.42 mi	10	12^th
Santa Clara County Office of Education	0.78 mi	24
Bullis Charter District	0.79 mi	1	3^rd
Mountain View Whisman	0.94 mi	12	301^st
Palo Alto Unified	1.48 mi	20	45^th

See the top CA California districts

SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the California Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.