Very Good
#2409 of 9,539 schools in CA
Top 25% in state
Arroyo Seco Junior High
Middle School · William S. Hart Union High
27171 North Vista Delgado Dr., Valencia, CA 91354
Enrollment
1,240
Student-Teacher
24.3:1
Score
7.6
Grades
7th – 8th
Enrollment
1,240
Student-Teacher
24.3:1
Score
7.6
Grades
7th – 8th
Data vintage
2022-23
Data vintage2022-23
How this school compares
California schools
#2,409 of 9,539
In Valencia
#10 of 12
public schools
In district
#5 of 16
William S. Hart Union High
Academic growth
8.9 / 10
Excellent
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Arroyo Seco Junior High
Middle School in Valencia · grades 7th – 8th. Start here, then compare fit against nearby and district options.
Santa Clarita Elementary
0.2 mi away. Use as a geographic alternative in the same move search.
James Foster Elementary
0.8 mi away. Use as a geographic alternative in the same move search.
About Arroyo Seco Junior High
Arroyo Seco Junior High is a public middle school in Valencia, CA, part of William S. Hart Union High. Arroyo Seco Junior High serves approximately 1,240 students, and covers grades 7th-8th, and has a 24.3:1 student-teacher ratio.
Arroyo Seco Junior High has a current MySchoolScout rating of 7.6 out of 10 and ranks #2,409 of 9,539 schools in CA. Structured state assessment records for Arroyo Seco Junior High show 56% math proficiency (multi-year average, 2009-2024) and 69% reading/ELA proficiency (multi-year average, 2009-2024).
- This school 7.6 · Very Good
- District avg 6.9
- CA avg 6.5
What Parents Should Know
Arroyo Seco Junior High runs 24.3:1 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
Arroyo Seco Junior High — Students at Arroyo Seco Junior High score 60% proficient, which is below what's typical for similar communities (expected: 66%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
15.5%
Students qualifying for federal meal assistance
Test Scores CA CAASPP (2023-24)
Based on 28 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: 8.9/10.
How Arroyo Seco Junior High Compares
See how Arroyo Seco Junior High performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Location
27171 North Vista Delgado Dr., Valencia, CA 91354
Nearby Alternatives
Families considering Arroyo Seco Junior High may also want to explore other middle schools in the area. Emblem Academy (rated 8.3/10, 0.9 miles away, in nearby Saugus), which scores slightly higher. Another option is Valencia High (rated 8.1/10, 1.5 miles away), which scores slightly higher. Additionally, Charles Helmers Elementary (rated 7.9/10, 0.9 miles away), which scores slightly higher. For more schools in Valencia, see our Valencia schools guide .
Nearby Schools
20 within 2.4 mi| School | Distance | Rating |
|---|---|---|
| Santa Clarita Elementary Saugus | 0.2 mi | 6.1 |
| James Foster Elementary Saugus | 0.8 mi | 6.5 |
| Emblem Academy Saugus | 0.9 mi | 8.3 |
| Highlands Elementary Saugus | 0.8 mi | 6.7 |
| Charles Helmers Elementary Valencia | 0.9 mi | 7.9 |
| North Park Elementary Valencia | 1.1 mi | 6.8 |
| MONTESSORI ON COPPER HILL Santa Clarita | 1.2 mi | — |
| Saugus High Saugus | 1.1 mi | 7.8 |
| Bridgeport Elementary Valencia | 1.3 mi | 6.8 |
| LEGACY CHRISTIAN ACADEMY Valencia | 1.5 mi | 6.2 |
| Valencia High Valencia | 1.5 mi | 8.1 |
| Opportunities for Learning - William S. Hart Covina | 1.5 mi | 5.4 |
| Alpha-Kidz International Valencia | 1.6 mi | — |
| Rio Norte Junior High Santa Clarita | 1.8 mi | 6.3 |
| Mission View Public Lancaster | 2.0 mi | 4.9 |
| Rosedell Elementary Saugus | 1.8 mi | 6.7 |
| Mountainview Elementary Saugus | 2.3 mi | 5.9 |
| MONTESSORI OF VALENCIA Valencia | 2.0 mi | 5.2 |
| Tesoro del Valle Elementary Valencia | 2.2 mi | 7.7 |
| Valencia Valley Elementary Valencia | 2.4 mi | 7.6 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 91354 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$148,818
Median Home Value
$803,000
Median Rent
$2,923/mo
Population
33,059
College Educated
53.9%
Homeownership
77.7%
Avg Commute
34.7 min
Poverty Rate
5.1%
Median Age
39.6
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Jefferson Leadership Academies Long Beach, CA | 7.6 |
| Joseph Kerr Middle Elk Grove, CA | 7.6 |
| Kastner Intermediate Fresno, CA | 7.6 |
| Miwok Middle Sacramento, CA | 7.6 |
| Pershing Middle San Diego, CA | 7.6 |
| Rancho Santa Margarita Intermediate Rancho Santa Margarita, CA | 7.6 |
Frequently Asked Questions
Common questions about Arroyo Seco Junior High
What grades does Arroyo Seco Junior High serve?
Arroyo Seco Junior High serves students in grades 7th through 8th.
How many students attend Arroyo Seco Junior High?
Arroyo Seco Junior High has an enrollment of approximately 1,240 students.
What is the student-teacher ratio at Arroyo Seco Junior High?
The student-teacher ratio at Arroyo Seco Junior High is 24.3:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Arroyo Seco Junior High rank in CA?
Arroyo Seco Junior High ranks #2,409 of 9,539 schools in CA.
What is Arroyo Seco Junior High's MySchoolScout rating?
Arroyo Seco Junior High has a current MySchoolScout rating of 7.6 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 Arroyo Seco Junior High?
Based on loaded state assessment records, Arroyo Seco Junior High has 56% math proficiency (multi-year average, 2009-2024) and 69% reading/ELA proficiency (multi-year average, 2009-2024).
Is Arroyo Seco Junior High a charter school?
No, Arroyo Seco Junior High is not a charter school. It is a traditional public school operated by the local school district.
Is Arroyo Seco Junior High a Title I school?
No, Arroyo Seco Junior High is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Arroyo Seco Junior High?
15.5% of students at Arroyo Seco Junior High 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
- 7th – 8th
- Enrollment
- 1,240
- Student-Teacher Ratio
- 24.3:1
- Teachers (FTE)
- 51
- Free/Reduced Lunch
- 15.5%
- Type
- regular
- Setting
- Large Suburb
- County
- Los Angeles County
- Chronic Absenteeism (SY 2022-23)
- 12.7%
- Phone
- (661) 296-0991
Resources & Links
District
William S. Hart Union High- District Enrollment
- 20,685
- Schools in District
- 16
- Per-Pupil Spending
- $15,278
- District Rank
- #5 of 16
Other Schools in This District
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