2020-2021 Updates

The 2020-21 calendar was revised by the Board of Trustees on June 23. The first day of school is now Monday, Aug. 10, and school hours have changed to allow for 10 additional minutes of instructional time. 

High School Hours:  7:30 a.m.-2:50 p.m.

For the 2020-2021 school year, the following changes have been made to the A/B day block schedule:

Mondays/Wednesdays - A day

Tuesdays/Thursdays - B day 

Friday - Alternating A/B day

Please visit the GISD website for more details or go to to see the A/B day block calendar.


Regular schedule - Beginning 9/8/2020

Period/lunch Time
Release to class  7:24 a.m.
A1/B1 7:30-8:55 a.m.
A2/B2 9:01-10:31 a.m.
A3/B3 10:37-1:19 p.m.
A Lunch

10:37-11:07 a.m.

B Lunch 11:10-11:40 a.m.
C Lunch 11:43-12:13 p.m.
D Lunch 12:16-12:46 p.m.
E Lunch 12:49-1:19 p.m.
A4/B4 1:25-2:50 p.m.
Building should be clear     3:00 p.m.*

In order to accommodate those students also attending the GRCTC, the regular bell schedule must be followed daily, regardless of special events taking place on individual campuses.

*Students need to clear the building by 3:00 p.m. unless being supervised by a teacher, coach or sponsor.

Early release schedule

Early release days: 9/2, 11/11, 12/17, 12/18, 2/3, 4/21, 6/7, 6/8

Period/lunch Time
A1/B1 7:30-8:24 a.m.
A2/B2 8:30-9:30 a.m.
A3/B3 9:36-11:53 a.m.
A Lunch

9:36-10:01 a.m.

(GRCTC bus leaves at 10:15 a.m.)

B Lunch 10:04-10:29 a.m.
C Lunch 10:32-10:57 a.m.
D Lunch 11:00-11:25 a.m.
E Lunch 11:28-11:53 a.m.
A4/B4  11:59-12:50 p.m.
Building should be clear  1:00 p.m.*

A4/B4 exams will be taken prior to the dates on which this schedule is used.

*Students need to clear the building by 1:00 p.m. on Early Release days unless being supervised by a teacher, coach or sponsor.

Fall 2020 exam schedule

Friday 12/18 with early release.  We will NOT have early release on Thursday, December 17th.  

Period/lunch Time
A1/B1 Exam  
A2/B2 Exam  
A3/B3 Exam  
A Lunch  
B Lunch  
C Lunch  
D Lunch  
E Lunch  
Building should be clear    1:00 p.m.*
A4/B4 Exam