William S. Hart Union High School District Home

A group of Junior High School students wearing pink team T-shirts pose with their teacher, a woman with dark hair in a pink dress, and 4 Helpful Honda Dealers in light blue polo shirts and baseball caps outside of a building of classrooms at Placerita Junior High School

Placerita JHS Teacher Jessica Velazquez selected for the Helpful Honda Teacher Appreciation Award!

Los Angeles County Teacher of the Year Nicole Jolicoeur poses with her award

Los Angeles County Teacher of the Year Nicole Jolicoeur

Celebrating 5 Years of Wellness Centers in the Hart District 2019-2024 text written in dark teal over pale robins egg blue background with 7 polaroid style images scattered throughout showing different features of the wellness center: bean bag chairs, couches, yoga mats, meditation poufs, bookshelves, cozy reading nooks, and a colorful mural
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

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
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

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

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Calendar

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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