- School starts Wednesday, Aug. 12, 2026 and ends Wednesday, May 26, 2027, an early release day.
- Thanksgiving break: Nov. 23 to 27. Students are out Saturday, Nov. 21 to Sunday, Nov. 29, back Monday, Nov. 30.
- Winter break: Dec. 21 to Jan. 1. Students are out Saturday, Dec. 19 to Tuesday, Jan. 5, back Wednesday, Jan. 6.
- Spring break: March 15 to 19. Students are out Saturday, March 13 to Sunday, March 21, back Monday, March 22.
- Two early release days for every school, plus two for some schools. Details below.
The AISD 2026-27 calendar
This is the district's own calendar, as AISD publishes it. Tap a page to open the full-size image.
Add the AISD 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. 26 events.
Download .ics
Holidays and breaks
Only the days with no school. 13 events.
Download .ics
Early release days
Only the half days. 4 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.
AISD vacations and holidays, 2026-27
Every day with no school for students, from the first day to the last: 13 entries and 34 weekdays in all.
| Day off | Dates | Days of the week | School days off |
|---|---|---|---|
| Labor Day and student holiday Holiday | Sept. 7 to 8 | Mon to Tue | 2 |
| Parent conference day (no school) Other | Oct. 9 | Fri | 1 |
| Student and staff holiday Holiday | Oct. 12 | Mon | 1 |
| Student holidays Holiday | Nov. 2 to 3 | Mon to Tue | 2 |
| Thanksgiving break Break | Nov. 23 to 27 | Mon to Fri | 5 |
| Winter break Break | Dec. 21 to Jan. 1 | Mon to Fri | 10 |
| Student holidays (staff days) Staff day | Jan. 4 to 5 | Mon to Tue | 2 |
| Martin Luther King Jr. Day Holiday | Jan. 18 | Mon | 1 |
| Parent conference day (no school) Other | Feb. 12 | Fri | 1 |
| Presidents Day and student holiday Holiday | Feb. 15 to 16 | Mon to Tue | 2 |
| Spring break Break | March 15 to 19 | Mon to Fri | 5 |
| Student and staff holiday HolidayBad weather makeup day: becomes a school day if needed. | March 26 | Fri | 1 |
| Student and staff holiday HolidayBad weather makeup day: becomes a school day if needed. | April 23 | Fri | 1 |
AISD early release days
Four early release days in all. Two are for every school. The other two are for some schools only, listed on the district page the calendar points to.
| Date | Day | What | Dismissal | Who |
|---|---|---|---|---|
| Dec. 17 | Thu | Early dismissal, secondary schools | Junior high 12:45 p.m., high school 11:35 a.m. | Secondary schools (grades 7-12) only |
| Dec. 18 | Fri | Early dismissal, end of first semester | Elementary 12:10 p.m., junior high 12:45 p.m., high school 11:35 a.m. | All schools |
| May 25 | Tue | Early dismissal, secondary schools | Junior high 12:45 p.m., high school 11:35 a.m. | Secondary schools (grades 7-12) only |
| May 26 | Wed | Last day of school, early dismissal | Elementary 12:10 p.m., junior high 12:45 p.m., high school 11:35 a.m. | All schools |
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.
- 4-day weekend: Saturday, Sept. 5 to Tuesday, Sept. 8. Labor Day and student holiday. Back Wednesday, Sept. 9.
- 4-day weekend: Friday, Oct. 9 to Monday, Oct. 12. Parent conference day (no school) and student and staff holiday. Back Tuesday, Oct. 13.
- 4-day weekend: Saturday, Oct. 31 to Tuesday, Nov. 3. Student holidays. Back Wednesday, Nov. 4.
- 9 days off in a row: Saturday, Nov. 21 to Sunday, Nov. 29. Thanksgiving break. Back Monday, Nov. 30.
- 18.5 days off in a row: Friday, Dec. 18 at early dismissal to Tuesday, Jan. 5. Early dismissal, end of first semester, winter break and student holidays (staff days). Back Wednesday, Jan. 6.
- 3-day weekend: Saturday, Jan. 16 to Monday, Jan. 18. Martin Luther King Jr. Day. Back Tuesday, Jan. 19.
- 5-day weekend: Friday, Feb. 12 to Tuesday, Feb. 16. Parent conference day (no school) and Presidents Day and student holiday. Back Wednesday, Feb. 17.
- 9 days off in a row: Saturday, March 13 to Sunday, March 21. Spring break. Back Monday, March 22.
- 3-day weekend: Friday, March 26 to Sunday, March 28. Student and staff holiday. Back Monday, March 29.
- 3-day weekend: Friday, April 23 to Sunday, April 25. Student and staff holiday. Back Monday, April 26.
Weeks with fewer than five school days
Twelve weeks have fewer than five school days, and four weeks have none at all.
| Week of | School days | Why |
|---|---|---|
| Aug. 10 | 3 | Before the first day |
| Sept. 7 | 3 | Labor Day and student holiday |
| Oct. 5 | 4 | Parent conference day (no school) |
| Oct. 12 | 4 | Student and staff holiday |
| Nov. 2 | 3 | Student holidays |
| Nov. 23 | 0 | Thanksgiving break |
| Dec. 21 | 0 | Winter break |
| Dec. 28 | 0 | Winter break |
| Jan. 4 | 3 | Student holidays (staff days) |
| Jan. 18 | 4 | Martin Luther King Jr. Day |
| Feb. 8 | 4 | Parent conference day (no school) |
| Feb. 15 | 3 | Presidents Day and student holiday |
| March 15 | 0 | Spring break |
| March 22 | 4 | Student and staff holiday |
| April 19 | 4 | Student and staff holiday |
| May 24 | 3 | After the last day |
Teacher workdays: no school for students
One of the days off is a staff day. Teachers work; students stay home. Plan child care as you would for a holiday.
- Monday, Jan. 4 to Tuesday, Jan. 5: student holidays (staff days)
Makeup days
Bad weather makeup day (if needed), Friday, March 26 and Bad weather makeup day (if needed), Friday, April 23.
Also worth knowing
- School is open on a federal holiday: Veterans Day (Wednesday, Nov. 11). Banks, post offices and many offices close; school does not.
- The student calendar prints no testing dates. AISD posts district assessment and exam schedules separately on its Calendars page.
- Some days off may change: student and staff holiday, March 26 (Bad weather makeup day: becomes a school day if needed) and student and staff holiday, April 23 (Bad weather makeup day: becomes a school day if needed).
- After the last day, the calendar still shows staff exchange day (no students) (May 28). Students are already out.
First and last day of school
Aug. 12First day, Wednesday
May 26Last day, Wednesday
172School days, by our count
34Weekdays off between them
The first day of school is Wednesday, Aug. 12, 2026. The last day is Wednesday, May 26, 2027, with early dismissal.
Teachers start sooner. Staff days before school run Aug. 4 to 11.
Grading periods
AISD grades in six-week grading periods, three per semester. The calendar marks each start and end with braces; it prints no day counts.
| Period | Dates | School days |
|---|---|---|
| 1st grading period | Aug. 12 to Sept. 18 | 26 |
| 2nd grading period | Sept. 21 to Oct. 30 | 28 |
| 3rd grading period | Nov. 4 to Dec. 18 | 28 |
| 4th grading period | Jan. 6 to Feb. 11 | 26 |
| 5th grading period | Feb. 17 to April 2 | 27 |
| 6th grading period | April 5 to May 26 | 37 |
What the district notes
- AISD publishes separate elementary (Pre-K to grade 6) and secondary (grades 7 to 12) student calendars. They match except for two days: secondary students also leave early on Thursday, Dec. 17 and Tuesday, May 25. This page shows the elementary calendar and lists both.
- Early college high schools follow their own 2026-27 calendar, and an A/B block day calendar is posted for schools on block schedules.
- Regular school hours: elementary (Pre-K to 6) 8:10 a.m. to 3:35 p.m., junior high 8:45 a.m. to 4:10 p.m., high school 7:35 a.m. to 3 p.m. On early dismissal days, Pre-K3 AM classes end at 10:10 a.m.
Common questions
When does AISD start in 2026?
The first day of school for Arlington ISD is Wednesday, Aug. 12, 2026.
When is the last day of school for AISD in 2027?
The last day for students is Wednesday, May 26, 2027. It is an early release day.
When is winter break for AISD?
Winter break runs Monday, Dec. 21 to Friday, Jan. 1. Counting weekends and the days next to it, students are out Saturday, Dec. 19 to Tuesday, Jan. 5 and go back Wednesday, Jan. 6.
When is spring break for AISD?
Spring break runs Monday, March 15 to Friday, March 19. Counting weekends, students are out Saturday, March 13 to Sunday, March 21 and go back Monday, March 22.
When is Thanksgiving break for AISD?
Thanksgiving break runs Monday, Nov. 23 to Friday, Nov. 27. Counting weekends, students are out Saturday, Nov. 21 to Sunday, Nov. 29 and go back Monday, Nov. 30.
Does AISD have early release days in 2026-27?
Yes. Friday, Dec. 18 (Elementary 12:10 p.m., junior high 12:45 p.m., high school 11:35 a.m.) and Wednesday, May 26 (Elementary 12:10 p.m., junior high 12:45 p.m., high school 11:35 a.m.) are for every school. Secondary schools (grades 7-12) only: Thursday, Dec. 17 and Tuesday, May 25 (Junior high 12:45 p.m., high school 11:35 a.m.).
How do I put the AISD 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 each one against the AISD secondary student calendar PDF, the AISD Calendars page and the Spanish edition of the elementary calendar.
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. 12: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, August 2026 grid, 12 circled with a semester bracket (legend: First/Last Day of School); "August 12 First Day of School". Also: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, "August 12 : First Day of School"; Estudiante de Primaria Calendario Académico 2026-2027 (page 2 of the elementary calendar PDF), "Agosto 12 Primer día de clases"; Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), "August 12 First Day of School".
- Last day, May 26: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, May 2027 grid, 26 circled with the early dismissal triangle and closing brackets; "May 26 Last Day of School/Early Dismissal". Also: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, "May 26 : Last Day of School/Early Dismissal"; Estudiante de Primaria Calendario Académico 2026-2027 (page 2 of the elementary calendar PDF), "Mayo 26 Último día de clases / Salida temprana"; Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), "May 26 Last Day of School/Early Dismissal".
- Staff professional learning and teacher prep days (no students), Aug. 4 to 11: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, Important Dates: "August 4 : Campus Professional Learning/Teacher Prep Day", "August 5" and "August 6 : Staff Professional Learning Day", "August 7", "August 10" and "August 11 : Teacher Prep Day" (not on the student calendar).
- Labor Day and student holiday, Sept. 7 to 8: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, September 2026 grid, 7 and 8 solid (Student Holiday); "September 7 Student & Staff Holiday", "September 8 Student Holiday". Also: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, "September 7 : Student & Staff Holiday"; "September 8 : Student Holiday"; Estudiante de Primaria Calendario Académico 2026-2027 (page 2 of the elementary calendar PDF), "Septiembre 7" and "Septiembre 8" Día feriado; Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), same cell on the secondary calendar.
- Parent conference day (no school), Oct. 9: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, October 2026 grid, 9 as a hexagon (legend: Student Holiday/Parent Conferences). Also: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, "October 9 : Student Holiday/Parent Conferences"; Estudiante de Primaria Calendario Académico 2026-2027 (page 2 of the elementary calendar PDF), "Octubre 9 Día feriado para estudiantes/Conferencias con padres"; Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), same cell on the secondary calendar.
- Student and staff holiday, Oct. 12: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, October 2026 grid, 12 solid; "October 12 Student & Staff Holiday". Also: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, "October 12 : Student & Staff Holiday"; Estudiante de Primaria Calendario Académico 2026-2027 (page 2 of the elementary calendar PDF), "Octubre 12 Día feriado para estudiantes y personal"; Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), same cell on the secondary calendar.
- Student holidays, Nov. 2 to 3: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, November 2026 grid, 2 and 3 solid; "November 2 Student & Staff Holiday", "November 3 Student Holiday". Also: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, "November 2 : Student & Staff Holiday"; "November 3 : Student Holiday"; Estudiante de Primaria Calendario Académico 2026-2027 (page 2 of the elementary calendar PDF), "Noviembre 2" and "Noviembre 3" Día feriado; Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), same cell on the secondary calendar.
- Thanksgiving break, Nov. 23 to 27: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, November 2026 grid, 23 to 27 solid; "November 23 - 27 Student & Staff Holiday". Also: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, "November 23 - 27 : Student & Staff Holiday"; Estudiante de Primaria Calendario Académico 2026-2027 (page 2 of the elementary calendar PDF), "Noviembre 23 - 27 Día feriado para estudiantes y personal"; Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), same cell on the secondary calendar.
- Winter break, Dec. 21 to Jan. 1: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, December 2026 grid, 21 to 25 and 28 to 31 solid; January 2027 grid, 1 solid; "December 21 - January 1 Student & Staff Holiday". Also: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, "December 21 - January 1 : Student & Staff Holiday"; Estudiante de Primaria Calendario Académico 2026-2027 (page 2 of the elementary calendar PDF), "Diciembre 21 - Enero 1 Día feriado para estudiantes y personal"; Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), same cell on the secondary calendar.
- Student holidays (staff days), Jan. 4 to 5: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, January 2027 grid, 4 and 5 solid; "January 4 - 5 Student Holiday". Also: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, "January 4 - 5 : Student Holiday"; Estudiante de Primaria Calendario Académico 2026-2027 (page 2 of the elementary calendar PDF), "Enero 4 - 5 Día feriado para estudiantes"; Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), same cell on the secondary calendar.
- Martin Luther King Jr. Day, Jan. 18: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, January 2027 grid, 18 solid; "January 18 Student & Staff Holiday". Also: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, "January 18 : Student & Staff Holiday"; Estudiante de Primaria Calendario Académico 2026-2027 (page 2 of the elementary calendar PDF), "Enero 18 Día feriado para estudiantes y personal"; Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), same cell on the secondary calendar.
- Parent conference day (no school), Feb. 12: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, February 2027 grid, 12 as a hexagon (Student Holiday/Parent Conferences). Also: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, "February 12 : Student Holiday/Parent Conferences"; Estudiante de Primaria Calendario Académico 2026-2027 (page 2 of the elementary calendar PDF), "Febrero 12 Día feriado para estudiantes/Conferencias con padres"; Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), same cell on the secondary calendar.
- Presidents Day and student holiday, Feb. 15 to 16: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, February 2027 grid, 15 and 16 solid; "February 15 Student & Staff Holiday", "February 16 Student Holiday". Also: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, "February 15 : Student & Staff Holiday"; "February 16 : Student Holiday"; Estudiante de Primaria Calendario Académico 2026-2027 (page 2 of the elementary calendar PDF), "Febrero 15" and "Febrero 16" Día feriado; Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), same cell on the secondary calendar.
- Spring break, March 15 to 19: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, March 2027 grid, 15 to 19 solid; "March 15 - 19 Student & Staff Holiday". Also: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, "March 15 - 19 : Student & Staff Holiday"; Estudiante de Primaria Calendario Académico 2026-2027 (page 2 of the elementary calendar PDF), "Marzo 15 - 19 Día feriado para estudiantes y personal"; Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), same cell on the secondary calendar.
- Student and staff holiday, March 26: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, March 2027 grid, *26 solid; "March 26 Student & Staff Holiday/Bad Weather Makeup Day". Also: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, "March 26 : Student & Staff Holiday/Bad Weather Makeup Day"; Estudiante de Primaria Calendario Académico 2026-2027 (page 2 of the elementary calendar PDF), "Marzo 26 Día feriado para estudiantes y personal/Día de recuperación por mal tiempo"; Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), same cell on the secondary calendar.
- Student and staff holiday, April 23: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, April 2027 grid, *23 solid; "April 23 Student & Staff Holiday/Bad Weather Makeup Day". Also: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, "April 23 : Student & Staff Holiday/Bad Weather Makeup Day"; Estudiante de Primaria Calendario Académico 2026-2027 (page 2 of the elementary calendar PDF), "Abril 23 Día feriado para estudiantes y personal/Día de recuperación por mal tiempo"; Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), same cell on the secondary calendar.
- Staff exchange day (no students), May 28: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, Important Dates: "May 28 : Staff Exchange Day" (not on the student calendar).
- Early dismissal, secondary schools, Dec. 17: Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, December 2026 grid, 17 with the early dismissal triangle; "December 17 - 18 Early Dismissal" (the elementary calendar marks only Dec. 18). Also: Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), Spanish page: "Diciembre 17 - 18 Salida temprana".
- Early dismissal, end of first semester, Dec. 18: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, December 2026 grid, 18 with the early dismissal triangle and the semester bracket; "December 18 Early Dismissal". Also: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, "December 18 : Early Dismissal"; Estudiante de Primaria Calendario Académico 2026-2027 (page 2 of the elementary calendar PDF), "Diciembre 18 Salida temprana"; Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), "December 17 - 18 Early Dismissal".
- Early dismissal, secondary schools, May 25: Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, May 2027 grid, 25 with the early dismissal triangle; "May 25 Early Dismissal" (not on the elementary calendar). Also: Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), Spanish page: "Mayo 25 Salida temprana".
- Last day of school, early dismissal, May 26: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, May 2027 grid, 26 circled with the early dismissal triangle; "May 26 Last Day of School/Early Dismissal". Also: Arlington ISD District Events Calendar page: Print Calendars and Important Dates for the 2026-2027 School Year, "May 26 : Last Day of School/Early Dismissal"; Estudiante de Primaria Calendario Académico 2026-2027 (page 2 of the elementary calendar PDF), "Mayo 26 Último día de clases / Salida temprana"; Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), "May 26 Last Day of School/Early Dismissal".
- Dismissal time, Early dismissal, secondary schools, Dec. 17: Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, "EARLY DISMISSAL HOURS": Junior High (7-8) 12:45p.m., High School (9-12) 11:35a.m.
- Dismissal time, Early dismissal, end of first semester, Dec. 18: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, "EARLY DISMISSAL HOURS" box: Elementary (Pre-K-6) 8:10a.m. - 12:10p.m., Junior High (7-8) 8:45a.m. - 12:45p.m., High School (9-12) 7:35a.m. - 11:35a.m.; Pre-K3 AM 10:10a.m., Pre-K3 PM 10:10a.m. - 12:10p.m.
- Dismissal time, Early dismissal, secondary schools, May 25: Arlington ISD Secondary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, "EARLY DISMISSAL HOURS": Junior High (7-8) 12:45p.m., High School (9-12) 11:35a.m.
- Dismissal time, Last day of school, early dismissal, May 26: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, "EARLY DISMISSAL HOURS" box: Elementary (Pre-K-6) 8:10a.m. - 12:10p.m., Junior High (7-8) 8:45a.m. - 12:45p.m., High School (9-12) 7:35a.m. - 11:35a.m.; Pre-K3 AM 10:10a.m., Pre-K3 PM 10:10a.m. - 12:10p.m.
- 1st grading period: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, August grid "{12" (legend: Grading Period Starts/Ends); September grid "18}".
- 2nd grading period: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, September grid "{21"; October grid "30}".
- 3rd grading period: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, November grid "{4"; December grid "18}]" (grading period and semester end).
- 4th grading period: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, January grid "[{6" (semester and grading period start); February grid "11}".
- 5th grading period: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, February grid "{17"; April grid "2}".
- 6th grading period: Arlington ISD Elementary Student 2026-2027 Academic Calendar, English and Spanish (PDF, approved Jan. 22, 2026), page 1, April grid "{5"; May grid "26}]".