Arroyo Seco Junior High
Valencia, CA · William S. Hart Union High
Regular public school · Grades 7-8 · Suburb, large
217th of 1,294 California middle schools statewide · better than 83%· Stable
27171 North Vista Delgado Dr., Valencia, CA 91354
(661) 296-0991Official website ↗NCES ID 064251006956Directory 2023–24
SchoolRow ranks Arroyo Seco Junior High 217th of 1,294 California middle schools for 2024–25, based on CAASPP 2024–25 English and Math results — better than 83% of middle schools statewide. Its statewide percentile went from 80th in 2015 to 83th in 2025.
Percent meeting or exceeding the state standard, CAASPP 2024–25 · 1,175 students tested
Racial and ethnic breakdown of 1,240 students (2023–24, NCES) — history since 1987, with comparable seven-category changes from 2010
| Group | Trend | 2010 | 2023 | Change |
|---|---|---|---|---|
| Hispanic | 27.5% | 40.6% | ▲ 13.1 pts | |
| White | 58.7% | 36.1% | ▼ 22.6 pts | |
| Asian | 7.6% | 12.4% | ▲ 4.8 pts | |
| Two or more races | 3.1% | 7.2% | ▲ 4.1 pts | |
| Black | 2.6% | 3.3% | ▲ 0.7 pts |
NCES history for this school begins in 1987. Race categories changed by 2010: earlier data combines Asian and Pacific Islander students and does not consistently identify multiracial students. The chart retains that history, while the change table uses 2010 onward.
Typical home value $840K in zip 91354 as of 2026-05 · trend since 2000
Data Provided by Zillow Group
Closest same-level schools, with 2024–25 state rank · ▲▼ = points better or worse than Arroyo Seco Junior High
- #139Rio Norte Junior HighWilliam S. Hart Union High · 1.8 mi away139th of 1,294
ELA 75% ▲6 · Math 63% ▲8Compare - #305Placerita Junior HighWilliam S. Hart Union High · 3.7 mi away305th of 1,294
ELA 62% ▼7 · Math 47% ▼8Compare - #467Sierra Vista Junior HighWilliam S. Hart Union High · 3.9 mi away467th of 1,294
ELA 53% ▼16 · Math 34% ▼21Compare - #354La Mesa Junior HighWilliam S. Hart Union High · 3.9 mi away354th of 1,294
ELA 59% ▼10 · Math 43% ▼12Compare - #95Rancho Pico Junior HighWilliam S. Hart Union High · 4.3 mi away95th of 1,294
ELA 81% ▲12 · Math 66% ▲11Compare - #364Castaic MiddleCastaic Union · 5 mi away364th of 1,294
ELA 61% ▼8 · Math 40% ▼15Compare - #702Olive Vista MiddleLos Angeles Unified · 10.2 mi away702nd of 1,294
ELA 41% ▼28 · Math 28% ▼27Compare - #148Robert Frost MiddleLos Angeles Unified · 10.3 mi away148th of 1,294
ELA 74% ▲5 · Math 62% ▲7Compare
What school district is Arroyo Seco Junior High in?
Arroyo Seco Junior High is part of the William S. Hart Union High district in Valencia, California.
Is Arroyo Seco Junior High a good school?
SchoolRow ranks Arroyo Seco Junior High 217th of 1,294 California middle schools (better than 83% statewide) based on 2024–25 test results (CAASPP 2024–25).
What is the racial makeup of Arroyo Seco Junior High?
Hispanic 41%, White 36%, Asian 12%, Two or more races 7% (1,240 students, 2023–24).
How much do homes near Arroyo Seco Junior High cost?
The typical home value in zip code 91354 is $840K 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.