Excellent
#1048 of 9,539 schools in CA
Top 11% in state
Sebastian Questa Elementary
Elementary School · Lammersville Joint Unified
685 North Montebello St., Mountain House, CA 95391
Enrollment
858
Student-Teacher
22.6:1
Score
8.3
Grades
Kindergarten – 8th
Enrollment
858
Student-Teacher
22.6:1
Score
8.3
Grades
Kindergarten – 8th
Data vintage
2022-23
Data vintage2022-23
How this school compares
California schools
#1,048 of 9,539
In Mountain House
#2 of 7
public schools
In district
#2 of 8
Lammersville Joint Unified
Academic growth
9.7 / 10
Excellent
Shortlisting around Sebastian Questa Elementary?
Use this profile as one decision point, then compare nearby options, source confidence, and commute fit before picking a neighborhood around it.
Shortlist starter
Start with these real page-level signals, then use the full table and map below.
Sebastian Questa Elementary
Elementary School in Mountain House · grades Kindergarten – 8th. Start here, then compare fit against nearby and district options.
Altamont Elementary
0.4 mi away. Use as a geographic alternative in the same move search.
Bethany Elementary
1.1 mi away. Use as a geographic alternative in the same move search.
About Sebastian Questa Elementary
Sebastian Questa Elementary is a public elementary school in Mountain House, CA, part of Lammersville Joint Unified. Sebastian Questa Elementary serves approximately 858 students, and covers grades Kindergarten-8th, and has a 22.6:1 student-teacher ratio. Sebastian Questa Elementary has a current MySchoolScout rating of 8.3 out of 10 and ranks #1,048 of 9,539 schools in CA.
Structured state assessment records for Sebastian Questa Elementary show 67% math proficiency (multi-year average, 2011-2024) and 71% reading/ELA proficiency (multi-year average, 2011-2024).
- This school 8.3 · Excellent
- District avg 8.0
- CA avg 6.2
What Parents Should Know
Sebastian Questa Elementary runs 22.6:1 students to teachers, above the national average. That often means bigger classes. Ask how the school supports kids who need extra help, and whether there are teaching assistants or small-group time.
Score Breakdown
Full Profile · 3/3 metricsView breakdown
View breakdown
View breakdown
Sebastian Questa Elementary — Students at Sebastian Questa Elementary score 72% proficient, which is above what's typical for similar communities (expected: 69%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
9.2%
Students qualifying for federal meal assistance
Test Scores CA CAASPP (2023-24)
Based on 32 test records from CA state assessments. About our data
Proficiency Trend
→ StableAverage proficiency (% at or above grade level) across Math & ELA over time.
Source: EdFacts (NCES) and state assessment data. Growth score: 9.7/10.
How Sebastian Questa Elementary Compares
See how Sebastian Questa Elementary performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Programs & Offerings
Data as of 2021-22 · Source: CRDC via Urban Institute · Learn more
Location
685 North Montebello St., Mountain House, CA 95391
Nearby Alternatives
Families considering Sebastian Questa Elementary may also want to explore other elementary schools in the area. Hansen Elementary (rated 8.4/10, 1.9 miles away), with a very similar rating. Another option is Altamont Elementary (rated 8.2/10, 0.4 miles away), with a very similar rating. Additionally, Wicklund Elementary (rated 8.2/10, 1.3 miles away), with a very similar rating. For more schools in Mountain House, see our Mountain House schools guide .
Nearby Schools
20 within 6.9 mi| School | Distance | Rating |
|---|---|---|
| Altamont Elementary Mountain House | 0.4 mi | 8.2 |
| Bethany Elementary Mountain House | 1.1 mi | 7.8 |
| Wicklund Elementary Mountain House | 1.3 mi | 8.2 |
| Zaytech Academy Mountain House | 1.4 mi | — |
| Mountain House High Mountain House | 1.7 mi | 8.0 |
| Mountain House Elementary Byron | 1.4 mi | — |
| Hansen Elementary Mountain House | 1.9 mi | 8.4 |
| Julius Cordes Elementary Mountain House | 2.0 mi | 8.0 |
| Lammersville Elementary Tracy | 3.3 mi | 7.4 |
| John C. Kimball High Tracy | 5.7 mi | 6.7 |
| Art Freiler Tracy | 5.7 mi | 6.0 |
| Tracy Independent Study Charter Tracy | 6.0 mi | 3.2 |
| Melville S. Jacobson Elementary Tracy | 6.1 mi | 4.5 |
| George Kelly Elementary Tracy | 6.6 mi | 6.8 |
| Merrill F. West High Tracy | 6.4 mi | 6.2 |
| WEST VALLEY CHRISTIAN ACADEMY Tracy | 6.6 mi | 6.0 |
| BELLA VISTA CHRISTIAN ACADEMY Tracy | 6.7 mi | 6.0 |
| Louis J. Villalovoz Elementary Tracy | 7.0 mi | 5.8 |
| Monte Vista Middle Tracy | 6.9 mi | 6.4 |
| McKinley Elementary Tracy | 6.9 mi | 5.5 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 95391 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$171,510
Median Home Value
$859,600
Median Rent
$3,232/mo
Population
25,193
College Educated
50.7%
Homeownership
73.2%
Avg Commute
54.7 min
Poverty Rate
2.7%
Median Age
34.2
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Alta Vista Elementary Redondo Beach, CA | 8.3 |
| Altamont Creek Elementary Livermore, CA | 8.3 |
| Alvarado Elementary San Francisco, CA | 8.3 |
| Anthony G. Bacich Elementary Kentfield, CA | 8.3 |
| Arroyo Vista Elementary South Pasadena, CA | 8.3 |
| Capri Elementary Encinitas, CA | 8.3 |
Frequently Asked Questions
Common questions about Sebastian Questa Elementary
What grades does Sebastian Questa Elementary serve?
Sebastian Questa Elementary serves students in grades Kindergarten through 8th.
How many students attend Sebastian Questa Elementary?
Sebastian Questa Elementary has an enrollment of approximately 858 students.
What is the student-teacher ratio at Sebastian Questa Elementary?
The student-teacher ratio at Sebastian Questa Elementary is 22.6:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Sebastian Questa Elementary rank in CA?
Sebastian Questa Elementary ranks #1,048 of 9,539 schools in CA.
What is Sebastian Questa Elementary's MySchoolScout rating?
Sebastian Questa Elementary has a current MySchoolScout rating of 8.3 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Sebastian Questa Elementary?
Based on loaded state assessment records, Sebastian Questa Elementary has 67% math proficiency (multi-year average, 2011-2024) and 71% reading/ELA proficiency (multi-year average, 2011-2024).
Is Sebastian Questa Elementary a charter school?
No, Sebastian Questa Elementary is not a charter school. It is a traditional public school operated by the local school district.
Is Sebastian Questa Elementary a Title I school?
No, Sebastian Questa Elementary is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Sebastian Questa Elementary?
9.2% of students at Sebastian Questa Elementary qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Neighborhood Context
Powered by 
Quick Facts NCES CCD (SY 2022-23)
- Grades
- Kindergarten – 8th
- Enrollment
- 858
- Student-Teacher Ratio
- 22.6:1
- Teachers (FTE)
- 38
- Free/Reduced Lunch
- 9.2%
- Type
- regular
- Setting
- Midsize Suburb
- County
- San Joaquin County
- Chronic Absenteeism (SY 2022-23)
- 15.2%
- Phone
- (209) 836-7230
Resources & Links
District
Lammersville Joint Unified- District Enrollment
- 7,764
- Schools in District
- 9
- Per-Pupil Spending
- $11,535
- District Rank
- #2 of 8
Other Schools in This District
How we rate schools
A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.
See how we rateRelated reading
- Best Elementary Schools in America: 2026 Rankingsbest schools
- Best Public Schools in California 2026: Top-Ranked Elementary, Middle & High Schoolsbest schools
- Best School Districts to Move To in 2026: A Data-Driven Guidebest schools
- Best Schools in Los Angeles, CA — 2026 Rankingsbest schools
- Best Schools in San Diego, CA — 2026 Rankingsbest schools
Get school insights in your inbox
New rankings, best-schools lists, and parent guides — delivered free. No spam, unsubscribe anytime.
We respect your privacy. Unsubscribe at any time.