William S. Hart Union High School District Home

2023/24 Year in Review video thumbnail
Four students in graduation regalia and honors medals and cords stand together smiling with the Hart District logo and white text that reads All About the Hart District. A play button overlays the image at the center of the image.
Aerial view of the new Hart High School Softball field with mountains in the background

3/12/24 Ribbon Cutting for the New Hart High School Softball Field

Hart District's Casey Cuny, the California Teacher of the Year at the White House with Dr. Jill Biden

California Teacher of the Year Casey Cuny

Be Present logo with a photo of students on campus
Be Present in school and in life! Too Sick for School? Send me to school? Keep me home? EVERY DAY COUNTS! Click here for updated LA County Department of Health Guidelines
A red background with a white cloud shape that reads, "How Will You Hear From Us? Click Here."
ParentSquare Logo and Hart District logo on a white background with black text that reads: A simple and safe way to connect and communicate
Navy Blue background with a panorama photo of a person addressing the Governing Board with gold text that reads "Independent Budget Review" with a loto for School Services of California, Inc. and the text "CLICK HERE" in white beneath

ONE HART

The William S. Hart Union High School District serves approximately 21,000 students on 18 campuses throughout the Santa Clarita Valley with ONE HART.
About Us
One HART Every Student Opportunity Ready Community, Caring, Courage, Creativity

Purpose

Our fundamental purpose is to ensure EVERY STUDENT is OPPORTUNITY READY when they graduate from the Hart District.
Strategic Plan

News

Interim Superintendent of the Hart District, Michael Vierra, Delores Huerta, and Golden Valley High School Principal, Sal Frias pose together on stage

Dolores Huerta visits Golden Valley High School

Golden Valley High School was honored to have American labor leader and civil rights activist Dolores Huerta visit and speak to an audience of students, staff, and community members
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Portraits of two men in ties with the following text beneath: Kullen Welch, Principal Valencia High School; and Thomas Flores, Principal La Mesa Junior High School

Hart District Names New Principals

The Governing Board unanimously approved the appointment of Kullen Welch as the new principal of Valencia HS and Thomas Flores as the new principal of La Mesa JHS
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Photo of Brennan Leem

Brennan Leem Awarded National Merit Scholarship

The William S. Hart Union High School District is excited to announce that Brennan Leem, a 2024 West Ranch High School graduate, has been awarded a National Merit Scholarship.
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At A Glance

Photo collage arranged in triangular lattice. Top, left to right: Junior High band students pose with instruments, art students drawing and painting in classroom, students throwing caps at graduation, students posing with physics experiment, student welding in CTE class. Center, the words Hart District in dark red on a white background. Bottom, left to right: High School cheerleaders and students on first day of school, robotics student working on project, group of students posing with trophies, students sitting in a circle, high school football team during a game.
  • CA Exemplary District
  • 11 CA Distinguished/ National Blue Ribbon Schools
  • 26 Career Technical Education Pathways in 13 Industry Sectors
  • 96.7% Graduation Rate
  • Wellness Centers on Every Campus