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William S. Hart Union High School District

Los Angeles County19 Schools~21,732 Students Enrolled

Explore Our Schools

PublicGrades: 9-12

Academy of the Canyons

Santa Clarita

385

PublicGrades: 7-8

Arroyo Seco Junior High School

Valencia

1239

PublicGrades: 9-12

Bowman (Jereann) High (Continuation) School

Santa Clarita

224

PublicGrades: 9-12

Canyon High School

Canyon Country

1952

PublicGrades: 9-12

Castaic High School

Castaic

1159

PublicGrades: 9-12

Golden Valley High School

Santa Clarita

1980

PublicGrades: 7-8

La Mesa Junior High School

Santa Clarita

1017

PublicGrades: 7-12

Learning Post Academy (Alternative)

Santa Clarita

322

PublicCharterGrades: 8-12

Mission View Public School

Santa Clarita

255

PublicCharterGrades: 7-12

Opportunities for Learning - William S. Hart School

Valencia

464

PublicGrades: 7-8

Placerita Junior High School

Newhall

940

PublicGrades: 7-8

Rancho Pico Junior High School

Stevenson Ranch

842

PublicGrades: 7-8

Rio Norte Junior High School

Santa Clarita

1138

PublicCharterGrades: K-12

Santa Clarita Valley International School

Castaic

548

PublicGrades: 9-12

Saugus High School

Saugus

2317

PublicGrades: 7-8

Sierra Vista Junior High School

Canyon Country

946

PublicGrades: 9-12

Valencia High School

Valencia

2286

PublicGrades: 9-12

West Ranch High School

Valencia

1777

PublicGrades: 9-12

William S. Hart High School

Newhall

1941

Academic Calendar

Holidays & Events2026-2027
  • Jul03

    Independence Day Observed

    Jul 3, 2026

  • Aug06

    Start Date for Returning Staff

    Aug 6, 2026

  • Aug11

    First Day of School for All Students

    Aug 11, 2026

  • Sep07

    Labor Day Holiday

    Sep 7, 2026

  • Oct05

    Fall Break

    Oct 5, 2026

  • Oct16

    End of First Quarter

    Oct 16, 2026

  • Nov11

    Veterans Day Observance

    Nov 11, 2026

  • Nov23

    Thanksgiving Break Period

    Nov 23, 2026 - Nov 27, 2026

  • Dec14

    First Semester Finals Period

    Dec 14, 2026 - Dec 17, 2026

  • Dec17

    End of First Semester

    Dec 17, 2026

  • Dec21

    Winter Break Start

    Dec 21, 2026 - Dec 31, 2026

  • Jan08

    Winter Break End

    Jan 8, 2027

  • Jan11

    Start of Second Semester

    Jan 11, 2027

  • Jan18

    Martin Luther King Jr. Day

    Jan 18, 2027

  • Mar19

    End of Third Quarter

    Mar 19, 2027

  • Apr05

    Spring Break Period

    Apr 5, 2027 - Apr 9, 2027

  • May31

    Memorial Day Observance

    May 31, 2027

  • Jun01

    Second Semester Finals Period

    Jun 1, 2027 - Jun 3, 2027

  • Jun03

    Last Day of School for Students

    Jun 3, 2027

  • Jun18

    Juneteenth Observed

    Jun 18, 2027

Area & Neighborhood Coverage

The William S. Hart Union High School District proudly serves a significant portion of northern Los Angeles County, specifically encompassing the vibrant and growing Santa Clarita Valley. Our reach extends across a diverse collection of communities, including the city of Santa Clarita itself – with its distinct neighborhoods like Valencia, Saugus, Canyon Country, and Newhall – alongside the charming areas of Stevenson Ranch, Castaic, and Agua Dulce. This expansive geographic area is characterized by its blend of suburban development, natural landscapes, and a strong sense of local identity, all within the larger context of Los Angeles County's diverse offerings.

District Overview & Regional Role

Within the dynamic landscape of Los Angeles County, the William S. Hart Union High School District plays a pivotal role in shaping the future of the Santa Clarita Valley. As a cornerstone institution, the district is deeply interwoven with the fabric of these communities, contributing significantly to the region's family-friendly atmosphere and its ongoing development. Our mission extends beyond traditional educational boundaries, fostering a sense of collective responsibility and pride that resonates throughout the local neighborhoods we serve. We are an integral part of the valley's identity, reflecting its values and contributing to its sustained vitality.

Frequently Asked Questions

Which specific communities does the William S. Hart Union High School District serve within Los Angeles County?

The Hart District primarily serves the Santa Clarita Valley in northern Los Angeles County, including the city of Santa Clarita (encompassing Valencia, Saugus, Canyon Country, and Newhall) as well as the communities of Stevenson Ranch, Castaic, and Agua Dulce.

How does the Hart District connect with the broader Los Angeles County region?

While deeply rooted in the Santa Clarita Valley, the Hart District operates within the larger framework of Los Angeles County. It often collaborates on regional initiatives and draws upon the county's vast resources, while maintaining a distinct local focus tailored to the needs of its specific communities.

What is the general geographical scope of the William S. Hart Union High School District?

The district's geographical scope covers a substantial area of northern Los Angeles County, primarily encompassing the entire Santa Clarita Valley, from the foothills north of Stevenson Ranch to the high desert areas near Agua Dulce, providing a cohesive educational structure for these distinct local areas.