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SUNNYVALE ISD — District Profile & Schools

SUNNYVALE, Texas · Dallas County

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Key Dates — SUNNYVALE ISD School Calendar

The first day of school in SUNNYVALE ISD is Wed, Aug 12, 2026, and the last day of school is Thu, May 27, 2027, according to the district's published calendar. Scheduled breaks include SISD Fall Break (Mon, Sep 28, 2026 to Fri, Oct 2, 2026), Thanksgiving Break (Tue, Nov 24, 2026 to Fri, Nov 27, 2026), Winter Break (Mon, Dec 21, 2026 to Fri, Jan 1, 2027), National School Breakfast Week (Mon, Mar 1, 2027), Spring Break (Mon, Mar 15, 2027 to Fri, Mar 19, 2027).

First day of school
Wed, Aug 12, 2026
Last day of school
Thu, May 27, 2027
SISD Fall Break
Mon, Sep 28, 2026 to Fri, Oct 2, 2026
Thanksgiving Break
Tue, Nov 24, 2026 to Fri, Nov 27, 2026
Winter Break
Mon, Dec 21, 2026 to Fri, Jan 1, 2027
National School Breakfast Week
Mon, Mar 1, 2027
Spring Break
Mon, Mar 15, 2027 to Fri, Mar 19, 2027
Summer Hours - SISD Closed
Fri, Jun 19, 2026 to Fri, Jul 31, 2026
SISD Campuses and Offices are Closed
Mon, Jun 29, 2026 to Fri, Jul 3, 2026
Labor Day
Mon, Sep 7, 2026
Spirit day - Favorite Holiday Attire
Fri, Oct 9, 2026
Student & Staff Holiday
Mon, Jan 18, 2027
MLK Jr. Day
Mon, Jan 18, 2027
2,317
Students
5
Schools
2 elem · 1 mid · 1 high
14.9:1
Student-Teacher
155 teachers
-1 - 12
Grades

Quick Facts

463
Avg. School Size
297
Total Staff

SUNNYVALE ISD Calendar

660 events

Source

Fri, Jun 19

Event

Summer Hours - SISD Closed

Sat, Jun 20

Event

KARATE TOURNAMENT

Mon, Jun 22

Event

School Board Meeting

Mon, Jun 22

Event

SISD Board Meeting

Fri, Jun 26

Event

Summer Hours - SISD Closed

Mon, Jun 29 - Fri, Jul 3

Event

SISD Campuses and Offices are Closed

Fri, Jul 3

Event

Summer Hours - SISD Closed

Thu, Jul 9

Event

Senior Portraits on Campus

Thu, Jul 9

Event

Senior Portraits on Campus

Fri, Jul 10

Event

Summer Hours - SISD Closed

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Data source: official SUNNYVALE ISD website · How we verify this data

Contact

Address
417 E TRIPP RD
SUNNYVALE, TX 75182
Phone
(972)226-5974

Staff & Students

Teachers (FTE)
155
Counselors
7
Total Staff
297
Data Source
NCES Common Core of Data
School Year 2023-24

Frequently Asked Questions about SUNNYVALE ISD

The first day of school in SUNNYVALE ISD is Wed, Aug 12, 2026, according to the district's published calendar.

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