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Antelope Valley Union High — District Profile & Schools

Lancaster, California · Los Angeles County

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Key Dates — Antelope Valley Union High School Calendar

The last day of school in Antelope Valley Union High is Thu, Jun 4, 2026, according to the district's published calendar.

Last day of school
Thu, Jun 4, 2026
Memorial Day
Mon, May 25, 2026
Juneteenth
Fri, Jun 19, 2026
21,737
Students
13
Schools
23.9:1
Student-Teacher
908 teachers
6 - 12
Grades

Quick Facts

1,672
Avg. School Size
2,070
Total Staff

Antelope Valley Union High Calendar

35 events

Fri, Jul 4

Holiday

Independence Day

Thu, Jul 31

PD Day

New SPED Teacher Training

Fri, Aug 1

PD Day

New SPED Teacher Training

Mon, Aug 4

PD Day

New Teacher Orientation / Ret. SPED Teacher Training

Tue, Aug 5

PD Day

New Teacher Orientation / Ret. SPED Teacher Training

Wed, Aug 6

PD Day

All Teacher Orientation

Thu, Aug 7

PD Day

All Teacher Orientation

Fri, Aug 8

PD Day

Professional Development Day

Student Free Day

Mon, Aug 11

Event

First Day of School for Students

Mon, Sep 1

Holiday

Labor Day

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Data source: official Antelope Valley Union High website · Last verified Jul 2, 2026 · How we verify this data

Contact

Address
176 Holston Dr.
Lancaster, CA 93535
Phone
(661)948-7655

Staff & Students

Teachers (FTE)
908
Total Staff
2,070
Data Source
NCES Common Core of Data
School Year 2023-24

Frequently Asked Questions about Antelope Valley Union High

The last day of school in Antelope Valley Union High is Thu, Jun 4, 2026, according to the district's published calendar.

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