Direct AnswerArroyo Seco Junior High is a public junior high school (grades 7-8) in the William S. Hart Union High School District, located at 27171 N. Vista Delgado Dr, Santa Clarita 91354, in the Valencia area of the Santa Clarita Valley. The Hart district serves grades 7-12. Valencia closed too few single-family sales in June 2026 (11) to publish a community median (Chicago Title Market Trend Report, June 2026 full-value sales compiled from MLS and public recorded data, pulled 2026-08-15); ZIP 91354 ran $1,050,000 on 7 sales. Median days on market: 21 (regional MLS, canonical data.json). Attendance areas are set by the district - confirm the exact boundary for a specific address with the Hart district's attendance-boundary tool.
If a Arroyo Seco assignment is on your must-have list, the key is the Hart district attendance boundary - not the ZIP code or the community name. Here is what to check, and what Valencia homes run.
About Arroyo Seco Junior High
Arroyo Seco Junior High is one of six junior high schools in the William S. Hart Union High School District, which serves grades 7-12 across the Santa Clarita Valley. The campus is at 27171 N. Vista Delgado Dr, Santa Clarita 91354, in the Valencia area. Junior highs in the Hart district cover grades 7-8; students continue to one of the district's comprehensive high schools by attendance area.
School assignment is set by the Hart district's attendance boundaries, which do not follow ZIP codes or community names exactly. Before writing an offer based on a Arroyo Seco assignment, confirm the boundary for that specific address with the Hart district.
The Valencia market
Valencia closed too few single-family sales in June 2026 (11) to publish a community median (Chicago Title Market Trend Report, June 2026 full-value sales compiled from MLS and public recorded data, pulled 2026-08-15); ZIP 91354 ran $1,050,000 on 7 sales. Median days on market: 21 (regional MLS, data.json). Valencia is one of the Santa Clarita Valley's distinct communities; for a comp set specific to the streets that fall inside the Arroyo Seco boundary, contact me.
