Sunnyvale ISD Calendar 2026-2027
Dallas County · Richardson area (Region 10)
The Sunnyvale ISD academic calendar for the 2026-2027 school year starts on Wednesday, August 12, 2026 and ends on Thursday, May 27, 2027. Through the fall, families can plan around Labor Day on September 7, a fall break from September 28 through 30, and the Thanksgiving break from November 23 through 27. The winter break runs from December 21 through 31. In the second semester, the calendar includes the Martin Luther King Jr. holiday on January 18 and a spring break from March 15 through 19.
Last updated August 4, 2026
Official Calendar
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PDF Full-year Sunnyvale ISD calendar with every key date — district logo, color legend and a QR code to this page.
Interactive calendar
Browse the key dates month by month — colored markers show each event.
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Frequently asked questions
When is the first day of school for Sunnyvale ISD in 2026-2027?
The first day of school for Sunnyvale ISD is Wednesday, August 12, 2026.
When is the last day of school for Sunnyvale ISD in 2026-2027?
The last day of school for Sunnyvale ISD is Thursday, May 27, 2027.
When is Thanksgiving break for Sunnyvale ISD?
Sunnyvale ISD has Thanksgiving break from November 23 through 27, 2026.
When is winter break for Sunnyvale ISD?
Sunnyvale ISD's winter break runs from December 21 through 31.
When is spring break for Sunnyvale ISD in 2026-2027?
Sunnyvale ISD's spring break is March 15 through 19, 2027.
When is fall break for Sunnyvale ISD?
Sunnyvale ISD has a fall break from September 28 through 30, 2026.
Does Sunnyvale ISD have school on Martin Luther King Jr. Day?
No. Sunnyvale ISD is closed for Martin Luther King Jr. Day on Monday, January 18, 2027.
Does Sunnyvale ISD have school on Labor Day?
No. Sunnyvale ISD is closed for Labor Day on Monday, September 7, 2026.
When is the first day of school in Sunnyvale ISD 2026-2027?
The first day of school in Sunnyvale ISD for the 2026-2027 calendar year is August 12, 2026.
When is spring break in Sunnyvale ISD 2026-2027?
Spring break in Sunnyvale ISD is scheduled from March 15 to March 19, 2027.
When is Christmas break in Sunnyvale ISD 2026-2027?
Christmas break in Sunnyvale ISD begins on December 21, 2026 and continues through January 1, 2027.
When is winter break in Sunnyvale ISD 2026-2027?
Winter break in Sunnyvale ISD runs from December 21, 2026 to January 1, 2027.
When is Thanksgiving break in Sunnyvale ISD 2026-2027?
Thanksgiving break in Sunnyvale ISD is from November 23 to November 27, 2026.
When is the last day of school in Sunnyvale ISD 2026-2027?
The last day of school in Sunnyvale ISD is May 27, 2027, and it is an early release day.
When does the second quarter begin in Sunnyvale ISD 2026-2027?
The second quarter begins on October 19, 2026.
When does the third quarter begin in Sunnyvale ISD 2026-2027?
The third quarter begins on January 6, 2027.
When does the fourth quarter begin in Sunnyvale ISD 2026-2027?
The fourth quarter begins on March 22, 2027.
When is STAAR/EOC testing in Sunnyvale ISD 2026-2027?
STAAR/EOC testing is scheduled from April 12 to April 23, 2027.