SchoolRow
#835

Altamont Elementary

Mountain House, CA · Lammersville Joint Unified · Grades K-8

835th of 5,659 California elementary schools statewide · better than 85% Improving

642
Students
2023–24 enrollment
23.8:1
Student / teacher ratio
13%
Free / reduced-price lunch
low-income indicator
10.2%
Chronically absent
CA average 20%

Altamont Elementary ranking

SchoolRow ranks Altamont Elementary 835th of 5,659 California elementary schools for 2024–25, based on CAASPP 2024–25 English and Math results — better than 85% of elementary schools statewide. Its statewide percentile went from 77th in 2015 to 85th in 2025 — improving.

Statewide percentile by year
25%50%75%85%201520202025no testing 2020–21

Altamont Elementary test scores

Percent meeting or exceeding the state standard, CAASPP 2024–25 · 429 students tested

English Language Arts
This school
70%
CA average
49%
Math
This school
64%
CA average
37%
Science
This school
64%
CA average
33%
English Language Arts over time this school CA average
25%50%75%70%49%201520202025no testing 2020–21
Math over time this school CA average
25%50%75%64%37%201520202025no testing 2020–21

Altamont Elementary students

Racial and ethnic breakdown of 642 students (202324, NCES) — and how it has shifted since 2014

Hispanic17%White16%Asian47%6%Two+13%
Hover the pie for details
Hispanic 17%White 16%Asian 47%Two or more races 13%20%27%38%20142023
GroupTrend20142023Change
Asian38.4%46.6% 8.2 pts
Hispanic20.2%17.1% 3.1 pts
White26.8%16.2% 10.6 pts
Two or more races6.9%12.6% 5.7 pts
Black6.1%6.2% 0.1 pts
American Indian0.6%0.8% 0.2 pts
Pacific Islander1.0%0.5% 0.5 pts

Homes near Altamont Elementary

Typical home value $914K in zip 95391 as of 2026-05 · trend since 2008

$293K$586K$879K$1.17M$994K20082010201520202025

Data Provided by Zillow Group

See recently sold homes in 95391 on Zillow →

Elementary schools near Altamont Elementary

Closest same-level schools, with 2024–25 state rank

View on the map →

Frequently asked questions

What school district is Altamont Elementary in?

Altamont Elementary is part of the Lammersville Joint Unified district in Mountain House, California.

Is Altamont Elementary a good school?

SchoolRow ranks Altamont Elementary 835th of 5,659 California elementary schools (better than 85% statewide) based on 2024–25 test results (CAASPP 2024–25).

What is the racial makeup of Altamont Elementary?

Asian 47%, Hispanic 17%, White 16%, Two or more races 13% (642 students, 2023–24).

How much do homes near Altamont Elementary cost?

The typical home value in zip code 95391 is $914K as of 2026-05 (Zillow ZHVI).

Sources: state education department data (CAASPP 2024–25, low-income, chronic absenteeism), National Center for Education Statistics via the Urban Institute (enrollment, demographics, staffing), Zillow Group (home values). Rankings are computed by SchoolRow from state English and Math results within grade level; they measure test performance, not everything that makes a school good.