Arroyo Seco Junior High
🇺🇸 Official data · 2025Valencia, California 91354 · William S. Hart Union High
#170 of 1,334 middle schools in California
#3097 of 15,369 nationally
About Arroyo Seco Junior High
Arroyo Seco Junior High is a public middle located in Valencia, in the William S. Hart Union High school district of California, United States. It caters for Grades 7–8. In 2025 it enrolled 1,239 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 71.1 out of 100, placing it in the top 25% of middle schools in United States and 170th of 1,334 ranked middle schools in California. Its strongest component is community advantage (fewer free/reduced-price lunch) (93th percentile), and its weakest is students per teacher (2th percentile).
Other published figures: enrollment 1,239.
There are 13 schools in Valencia; Arroyo Seco Junior High ranks 7th of 13 scored schools there.
Success Index (US) breakdown
Each component is a percentile against middle schools across United States.
- Math proficiency (30%)55%
- Reading proficiency (30%)72%
- Community advantage (fewer free/reduced-price lunch) (25%)17.2%
- Students per teacher (15%)24.8
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Arroyo Seco Junior High by the official sources.
- Enrollment
- 1,239
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 17.2%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 24.8
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 72%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 55%
- Share of tested students proficient or above (all students, all grades).
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Schools near Arroyo Seco Junior High
Closest schools by straight-line distance, with their Success Index (US).
Highlands Elementary
Saugus · Public elementary · Grades K–6
666 students · 1.3 km away
James Foster Elementary
Saugus · Public elementary · Grades K–6
508 students · 1.3 km away
Emblem Academy
Saugus · Public elementary · Grades K–6
810 students · 1.4 km away
Charles Helmers Elementary
Valencia · Public elementary · Grades K–6
524 students · 1.5 km away
North Park Elementary
Valencia · Public elementary · Grades K–6
441 students · 1.7 km away
Saugus High
Saugus · Public high · Grades 9–12
2,317 students · 1.7 km away
Bridgeport Elementary
Valencia · Public elementary · Grades K–6
866 students · 2.0 km away
Valencia High
Valencia · Public high · Grades 9–12
2,286 students · 2.3 km away
Opportunities for Learning - William S. Hart
Valencia · Charter high · Grades 7–12
464 students · 2.5 km away
Rosedell Elementary
Saugus · Public elementary · Grades K–6
660 students · 2.8 km away
Similar schools
Public middle schools in California with a comparable Enrollment.
Charles Blackstock Junior High
Oxnard · Public middle · Grades 6–8
1,239 students
Sussman (Edward A.) Middle
Downey · Public middle · Grades 6–8
1,240 students
Gonzalo Felicitas Mendez Fundamental Intermediate
Santa Ana · Public middle · Grades 6–8
1,234 students
Bella Vista Middle
Murrieta · Public middle · Grades 6–8
1,249 students
Hesperia Junior High
Hesperia · Public middle · Grades 7–8
1,228 students
Dr. Augustine Ramirez Intermediate
Eastvale · Public middle · Grades 7–8
1,228 students
Frequently asked questions
Is Arroyo Seco Junior High a good school?
Arroyo Seco Junior High has a Success Index (US) of 71.1 out of 100 (Top 25% of middle schools in United States) and ranks #170 of 1,334 in California. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Arroyo Seco Junior High rank in California?
Arroyo Seco Junior High ranks #170 of 1,334 middle schools in California and #3097 of 15,369 nationally on the Success Index (US) (2025 data).
How many students attend Arroyo Seco Junior High?
Arroyo Seco Junior High had 1,239 students in 2025.
Is Arroyo Seco Junior High a elementary school or a high school?
Arroyo Seco Junior High is classified as a middle covering Grades 7–8. It is a public school.
What other schools are near Arroyo Seco Junior High?
There are 10 schools within 15 km of Arroyo Seco Junior High; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.