- School starts Wednesday, Aug. 11, 2027 and ends Wednesday, May 24, 2028, an early release day.
- Thanksgiving break: Nov. 22 to 26. Students are out Saturday, Nov. 20 to Sunday, Nov. 28, back Monday, Nov. 29.
- Winter break: Dec. 20 to 31. Students are out Saturday, Dec. 18 to Monday, Jan. 3, back Tuesday, Jan. 4.
- Spring break: March 13 to 17. Students are out Friday, March 10 to Sunday, March 19, back Monday, March 20.
- Two early release days for every school. Details below.
The Katy ISD 2027-28 calendar
This is the district's own calendar, as Katy ISD publishes it. Tap it to open the full-size image.
Add the Katy ISD calendar to your phone
Pick a file. Each one is an all-day event per day off or half day, and a break is one event across all its days.
Every date
First and last day, every day off, every early release and grading period dates. 23 events.
Download .ics
Holidays and breaks
Only the days with no school. 14 events.
Download .ics
Early release days
Only the half days. 2 events.
Download .ics
On an iPhone
Tap a file above, then tap Add All. The dates go into the calendar you choose.
In Google Calendar
On a computer, open Google Calendar, then Settings, then Import & export. Choose the file and the calendar to add it to. The dates show up on your Android phone too.
In Outlook
Open the downloaded file, or in Outlook on the web go to Add calendar, then Upload from file.
These files are a copy of the calendar today. If the district changes a date, download the file again.
Katy ISD vacations and holidays, 2027-28
Every day with no school for students, from the first day to the last: 14 entries and 34 weekdays in all.
| Day off | Dates | Days of the week | School days off |
|---|---|---|---|
| Labor Day Holiday | Sept. 6 | Mon | 1 |
| Campus professional learning day Staff day | Sept. 17 | Fri | 1 |
| Fall break Break | Oct. 8 to 12 | Fri to Tue | 3 |
| Campus professional learning day Staff day | Oct. 22 | Fri | 1 |
| Campus professional learning day Staff day | Nov. 1 | Mon | 1 |
| Thanksgiving break Break | Nov. 22 to 26 | Mon to Fri | 5 |
| Winter break Break | Dec. 20 to 31 | Mon to Fri | 10 |
| Campus day (no students) Staff day | Jan. 3 | Mon | 1 |
| Martin Luther King Jr. Day Holiday | Jan. 17 | Mon | 1 |
| Campus professional learning day Staff day | Feb. 11 | Fri | 1 |
| Presidents Day Holiday | Feb. 21 | Mon | 1 |
| Campus professional learning day Staff day | March 10 | Fri | 1 |
| Spring break Break | March 13 to 17 | Mon to Fri | 5 |
| Student and staff holiday Holiday | April 14 to 17 | Fri to Mon | 2 |
Katy ISD early release days
Two early release days in all.
| Date | Day | What | Dismissal | Who |
|---|---|---|---|---|
| Dec. 17 | Fri | Early dismissal, end of fall semester | Times vary by school | All schools |
| May 24 | Wed | Early dismissal, last day of school | Times vary by school | All schools |
Where the time varies by school, your school sends its own dismissal time.
Calendar notes: what to plan around
Long weekends and breaks
Every stretch of three or more days with no school, counting weekends. A half day next to a weekend adds half a day.
- 3-day weekend: Saturday, Sept. 4 to Monday, Sept. 6. Labor Day. Back Tuesday, Sept. 7.
- 3-day weekend: Friday, Sept. 17 to Sunday, Sept. 19. Campus professional learning day. Back Monday, Sept. 20.
- 5-day weekend: Friday, Oct. 8 to Tuesday, Oct. 12. Fall break. Back Wednesday, Oct. 13.
- 3-day weekend: Friday, Oct. 22 to Sunday, Oct. 24. Campus professional learning day. Back Monday, Oct. 25.
- 3-day weekend: Saturday, Oct. 30 to Monday, Nov. 1. Campus professional learning day. Back Tuesday, Nov. 2.
- 9 days off in a row: Saturday, Nov. 20 to Sunday, Nov. 28. Thanksgiving break. Back Monday, Nov. 29.
- 17.5 days off in a row: Friday, Dec. 17 at early dismissal to Monday, Jan. 3. Early dismissal, end of fall semester, winter break and Campus day (no students). Back Tuesday, Jan. 4.
- 3-day weekend: Saturday, Jan. 15 to Monday, Jan. 17. Martin Luther King Jr. Day. Back Tuesday, Jan. 18.
- 3-day weekend: Friday, Feb. 11 to Sunday, Feb. 13. Campus professional learning day. Back Monday, Feb. 14.
- 3-day weekend: Saturday, Feb. 19 to Monday, Feb. 21. Presidents Day. Back Tuesday, Feb. 22.
- 10 days off in a row: Friday, March 10 to Sunday, March 19. Campus professional learning day and spring break. Back Monday, March 20.
- 4-day weekend: Friday, April 14 to Monday, April 17. Student and staff holiday. Back Tuesday, April 18.
Weeks with fewer than five school days
Fifteen weeks have fewer than five school days, and four weeks have none at all.
| Week of | School days | Why |
|---|---|---|
| Aug. 9 | 3 | Before the first day |
| Sept. 6 | 4 | Labor Day |
| Sept. 13 | 4 | Campus professional learning day |
| Oct. 4 | 4 | Fall break |
| Oct. 11 | 3 | Fall break |
| Oct. 18 | 4 | Campus professional learning day |
| Nov. 1 | 4 | Campus professional learning day |
| Nov. 22 | 0 | Thanksgiving break |
| Dec. 20 | 0 | Winter break |
| Dec. 27 | 0 | Winter break |
| Jan. 3 | 4 | Campus day (no students) |
| Jan. 17 | 4 | Martin Luther King Jr. Day |
| Feb. 7 | 4 | Campus professional learning day |
| Feb. 21 | 4 | Presidents Day |
| March 6 | 4 | Campus professional learning day |
| March 13 | 0 | Spring break |
| April 10 | 4 | Student and staff holiday |
| April 17 | 4 | Student and staff holiday |
| May 22 | 3 | After the last day |
Teacher workdays: no school for students
Six of the days off are staff days. Teachers work; students stay home. Plan child care as you would for a holiday.
- Friday, Sept. 17: Campus professional learning day
- Friday, Oct. 22: Campus professional learning day
- Monday, Nov. 1: Campus professional learning day
- Monday, Jan. 3: Campus day (no students)
- Friday, Feb. 11: Campus professional learning day
- Friday, March 10: Campus professional learning day
Makeup days
The calendar names no bad weather makeup days. It says it contains enough minutes to cover two bad weather days. If school closes for weather, the district announces how the day is made up.
Also worth knowing
- School is open on a federal holiday: Veterans Day (Thursday, Nov. 11). Banks, post offices and many offices close; school does not.
- The district calendar prints no parent-teacher conference days.
- The district calendar prints no testing dates.
- After the last day, the calendar still shows Campus day (May 25), Memorial Day (May 29) and Juneteenth holiday (June 19). Students are already out.
First and last day of school
Aug. 11First day, Wednesday
May 24Last day, Wednesday
172School days, by our count
34Weekdays off between them
The first day of school is Wednesday, Aug. 11, 2027. The last day is Wednesday, May 24, 2028, with early dismissal.
Teachers start sooner. Staff days before school run Aug. 2 to 10.
The district prints 172 instructional days across the elementary grading cycles. Our count of the calendar matches.
Grading periods
Elementary grading cycles
| Period | Dates | School days |
|---|---|---|
| 1st grading cycle | Aug. 11 to Oct. 7 | 40 |
| 2nd grading cycle | Oct. 13 to Dec. 17 | 41 |
| 3rd grading cycle | Jan. 4 to March 9 | 45 |
| 4th grading cycle | March 20 to May 24 | 46 |
Secondary grading cycles
| Period | Dates | School days |
|---|---|---|
| 1st grading cycle | Aug. 11 to Sept. 16 | 26 |
| 2nd grading cycle | Sept. 20 to Oct. 29 | 26 |
| 3rd grading cycle | Nov. 2 to Dec. 17 | 29 |
| 4th grading cycle | Jan. 4 to Feb. 10 | 27 |
| 5th grading cycle | Feb. 14 to April 7 | 33 |
| 6th grading cycle | April 10 to May 24 | 31 |
What the district notes
- The calendar marks two early dismissals, Dec. 17 and May 24, but prints no dismissal time. Check your school's bell schedule for the time.
- Katy ISD builds enough extra minutes into the calendar to cover two bad weather days, so no makeup day is set aside.
Common questions
When does Katy ISD start in 2027?
The first day of school for Katy Independent School District is Wednesday, Aug. 11, 2027.
When is the last day of school for Katy ISD in 2028?
The last day for students is Wednesday, May 24, 2028. It is an early release day.
When is winter break for Katy ISD?
Winter break runs Monday, Dec. 20 to Friday, Dec. 31. Counting weekends and the days next to it, students are out Saturday, Dec. 18 to Monday, Jan. 3 and go back Tuesday, Jan. 4.
When is spring break for Katy ISD?
Spring break runs Monday, March 13 to Friday, March 17. Counting weekends and the days next to it, students are out Friday, March 10 to Sunday, March 19 and go back Monday, March 20.
When is Thanksgiving break for Katy ISD?
Thanksgiving break runs Monday, Nov. 22 to Friday, Nov. 26. Counting weekends, students are out Saturday, Nov. 20 to Sunday, Nov. 28 and go back Monday, Nov. 29.
Does Katy ISD have early release days in 2027-28?
Yes. Friday, Dec. 17 (times vary by school) and Wednesday, May 24 (times vary by school) are for every school.
How do I put the Katy ISD calendar on my phone?
Download one of the .ics files on this page. On an iPhone, open it and tap Add All. On Android or a computer, import it into Google Calendar or Outlook.
How we checked these dates
We read every date off the district's own calendar twice: once from the PDF's text and once from the image, cell by cell against its legend. Then we checked our count of every school day against the day counts the district prints. They match.
Every weekday on this page matches its date. If the district changes its calendar, its page is the final word.
Where each date is on the district's calendar
- First day, Aug. 11: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, August grid, 11 with "<[" (begin elementary and secondary grading cycle); Highlights: "11 First Day of School and Fall Semester".
- Last day, May 24: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, May grid, 24 circled (key: Early Dismissal) with "]>"; Highlights: "24 Early Dismissal and Last Day of School".
- Teacher days before school, Aug. 2 to 10: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, August grid, 2, 5, 6, 9 and 10 boxed (key: Campus Day), 3 and 4 boxed with a slash (key: District Professional Learning Day); Highlights: "2 Campus Day", "3-4 District Professional Learning Days", "5-10 Campus Days".
- Labor Day, Sept. 6: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, September grid, 6 shaded (key: Holiday / Break • Students and Staff); Highlights: "6 Holiday • Students and Staff".
- Campus professional learning day, Sept. 17: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, September grid, 17 in a hexagon (key: Campus Professional Learning Day • No Students); Highlights: "17 Campus Professional Learning Day • No Students".
- Fall break, Oct. 8 to 12: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, October grid, 8, 11 and 12 shaded; Highlights: "8-12 Fall Break • Students and Staff".
- Campus professional learning day, Oct. 22: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, October grid, 22 in a hexagon; Highlights: "22 Campus Professional Learning Day • No Students".
- Campus professional learning day, Nov. 1: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, November grid, 1 in a hexagon; Highlights: "1 Campus Professional Learning Day • No Students".
- Thanksgiving break, Nov. 22 to 26: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, November grid, 22 to 26 shaded; Highlights: "22-26 Holiday • Students and Staff".
- Winter break, Dec. 20 to 31: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, December grid, 20 to 24 and 27 to 31 shaded; Highlights: "20-31 Winter Break • Students and Staff".
- Campus day (no students), Jan. 3: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, January grid, 3 boxed (key: Campus Day); Highlights: "3 Campus Day • No Students".
- Martin Luther King Jr. Day, Jan. 17: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, January grid, 17 shaded; Highlights: "17 Holiday • Students and Staff".
- Campus professional learning day, Feb. 11: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, February grid, 11 in a hexagon; Highlights: "11 Campus Professional Learning Day • No Students".
- Presidents Day, Feb. 21: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, February grid, 21 shaded; Highlights: "21 Holiday • Students and Staff".
- Campus professional learning day, March 10: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, March grid, 10 in a hexagon; Highlights: "10 Campus Professional Learning Day • No Students".
- Spring break, March 13 to 17: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, March grid, 13 to 17 shaded; Highlights: "13-17 Spring Break • Students and Staff".
- Student and staff holiday, April 14 to 17: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, April grid, 14 and 17 shaded; Highlights: "14-17 Holiday • Students and Staff".
- Campus day, May 25: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, May grid, 25 boxed (key: Campus Day); Highlights: "25 Campus Day".
- Memorial Day, May 29: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, May grid, 29 shaded; Highlights: "29 Holiday • Staff".
- Juneteenth holiday, June 19: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, June grid, 19 shaded; Highlights: "19 Holiday • Staff".
- Early dismissal, end of fall semester, Dec. 17: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, December grid, 17 circled (key: Early Dismissal); Highlights: "17 Early Dismissal and End of Semester".
- Early dismissal, last day of school, May 24: Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, May grid, 24 circled (key: Early Dismissal); Highlights: "24 Early Dismissal and Last Day of School".
- 1st grading cycle (elementary grading cycles): Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, August grid "[" before 11, October grid "]" after 7 (key: Begin/End Elementary Grading Cycle); Days of Instruction: 1st Grading Cycle Elem. 40.
- 2nd grading cycle (elementary grading cycles): Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, October grid "[" before 13, December grid "]" after 17; Highlights: "13 2nd Elementary Grading Cycle Begins"; Days of Instruction: 2nd Grading Cycle Elem. 41.
- 3rd grading cycle (elementary grading cycles): Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, January grid "[" before 4, March grid "]" after 10 (a campus professional learning day; the last school day is March 9); Days of Instruction: 3rd Grading Cycle Elem. 45 (spring).
- 4th grading cycle (elementary grading cycles): Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, March grid "[" before 20, May grid "]" after 24; Highlights: "20 4th Elementary Grading Cycle Begins"; Days of Instruction: 4th Grading Cycle Elem. 46.
- 1st grading cycle (secondary grading cycles): Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, August grid "<" before 11, September grid ">" after 16 (key: Begin/End Secondary Grading Cycle); Days of Instruction: 1st Grading Cycle Sec. 26.
- 2nd grading cycle (secondary grading cycles): Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, September grid "<" before 20, October grid ">" after 29; Highlights: "20 2nd Secondary Grading Cycle Begins"; Sec. 26.
- 3rd grading cycle (secondary grading cycles): Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, November grid "<" before 2, December grid ">" after 17; Highlights: "2 3rd Secondary Grading Cycle Begins"; Sec. 29.
- 4th grading cycle (secondary grading cycles): Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, January grid "<" before 4, February grid ">" after 10; Sec. 27.
- 5th grading cycle (secondary grading cycles): Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, February grid "<" before 14, April grid ">" after 7; Highlights: "14 5th Secondary Grading Cycle Begins"; Sec. 33.
- 6th grading cycle (secondary grading cycles): Katy ISD Instructional Calendar 2027-2028 (PDF, approved by the Board of Trustees Jan. 20, 2026), page 1, April grid "<" before 10, May grid ">" after 24; Highlights: "10 6th Secondary Grading Cycle Begins"; Sec. 31.