Where is Tolleson Union High School District (4288) located?

The Tolleson Union High School District (4288) district is headquartered in Tolleson, AZ. It serves Maricopa County.

How many students are enrolled in Tolleson Union High School District (4288)?

13,665 students attend schools in Tolleson Union High School District (4288).

Suburban

Tolleson Union High School District (4288) School Calendar 2026-27

Tolleson, Arizona · Maricopa County

Sync Tolleson Union High School District (4288)'s calendar to your phone: no-school days, breaks, holidays and more. $29.99/year. Get started

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Tue, Nov 3

Election Day

No School

Wed, Nov 11

Veterans Day Holiday

No School

Nov 23 - 27

Thanksgiving Break

No School Review the calendar for the full break dates.

Fri, Dec 18

Last Day of Fall Classes/End of 1st Semester

Mon, Dec 21 - Fri, Jan 1

Winter Break

No School Review the calendar for the full break dates.

Mon, Jan 4

Teacher In-service

No School Review the school calendar for staff development day details.

Full School Calendar 2026-27

27 events

Mon, Sep 7

Holiday

Labor Day Holiday

No School

Fri, Sep 25

Event

Sandra Day O'Connor Civics Day

Wed, Sep 30

PD Day

All Staff In-Service

No School Check the staff notice for agenda topics and required materials.

Fri, Oct 2

Event

End of 1st Quarter

Oct 5 - 9

Break

Fall Break

No School Review the calendar for the full break dates.

Mon, Oct 12

Holiday

Indigenous People's Day

Banks, government offices, and schools may be closed.

Tue, Nov 3

Holiday

Election Day

No School

Wed, Nov 11

Holiday

Veterans Day Holiday

No School

Nov 23 - 27

Break

Thanksgiving Break

No School Review the calendar for the full break dates.

Fri, Dec 18

Event

Last Day of Fall Classes/End of 1st Semester

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Data source: official Tolleson Union High School District (4288) website · Last verified May 20, 2026 · How we verify this data

Key Dates — Tolleson Union High School District (4288) School Calendar

Scheduled breaks include Fall Break (Mon, Oct 5, 2026 to Fri, Oct 9, 2026), Thanksgiving Break (Mon, Nov 23, 2026 to Fri, Nov 27, 2026), Winter Break (Mon, Dec 21, 2026 to Fri, Jan 1, 2027), Spring Break (Mon, Mar 15, 2027 to Fri, Mar 19, 2027), Spring Recess (Fri, Mar 26, 2027), Testing Break (Fri, Apr 23, 2027).